Aphelios

I didn't play with many Aphelios since his release, because he was often banned or picked by the enemy team, then Riot nerfed him so no one uses him anymore. I don't really know how to say about him because I haven't learn his abilities yet lol. The few Aphelios I got in game as allies were pretty good and as Lulu I could speed them and give them attack speed and save him from assassins at the same time. I can easily say that a fed Aphelios can win a game with a decent support behind. I'm sorry I haven't much info about everything else like laning phase or teamfights.

Ashe

Ashe is a squishy ADC and cannot peel herself; this will be our job. She may seem weak in early levels if she plays passively, but she can melt enemies' life. She has no mobility, so we can speed her up with Whimsy when needed (like when she activates her Q or just to run away without wasting her ultimate. Try to keep enemies away from her so she can farm safely in lane and wait for her to engage. There are so many thing that could happen in that engage that I can't even do an example lol. You can speed her up and give her attack speed to make her Q proc faster, or polymorph their ADC to "save" Ashe from some damage. A decent Ashe will never be out of position because she can die so easily. Protect her with everything you have and shield her in teamfight for Ardent Censer's passive.

Caitlyn

With Caitlyn you can go a bit deeper poking enemies because she can help you with her long range even if she's farming. You can even play passively and shield her when needed. If an enemy step on her W, use your E on Caitlyn because she deals more damage with Pix. You can even polymorph an enemy so he can't dash away and Caitlyn puts a trap near him. She has an escape, so if you're getting ganked, use Whimsy on you to run away. Caitlyn has a strong mid-late game, her crits are just ridiculous. Save this Sheriff at the cost of your life.

Draven

Sooo... What should I say? Draven is Draven (or Draaaaaven), he deals tons of damage at level 1 already. Draven/Lulu isn't the best match together but I think that Lulu works with almost everyone, so.. If you see him going aggressive, you can choose between using E > Q on the enemy if he's running away or shield Draven and polymorph their ADC. Keep him alive and let him do all the damage he can do! You might have to buy Mikael's Blessing because he'll be focused hard, so be careful.

Ezreal

I think that Ezreal is one of the most annoying ADCs to have against if he's able to hit his Q. I think that he would lane better with a tank like Leona/ Thresh, because he plays passively and he needs to engage with his only escape Arcane Shift, so if enemies turn against him he could be forced to use Flash or just dead. Same as Caitlyn, he has an escape, so if you get ganked, use W on yourself to run away. If enemies have Blitzcrank, Thresh, Leona or Morgana, they might focus you with their CCs and engages, because Ezreal can jump away from them. Be very careful!

Jhin

Try to play near his traps because if enemies step on it, they will be slowed and Jhin can use his W to snare them. Like Caitlyn's ult, Jhin's ult can be blocked. Try to keep enemies inside of it with your slow and your polymorph, or just try to use your E on one enemy to keep having vision even if they are far away.

Jinx

Jinx is the hypercarry I adore. Try to get her fed in early game and she will be a Super Mega Death-Bringer. She gains mobility only from her passive and her only self peel is her E. If she catches an enemy with her traps, wait 1-2 seconds and use Glitterlance on him and W > E on Jinx granting her movement speed to follow up and bonus damage from Pix. If you see that she's throwing her Super Mega Death Rocket! around the map, use a skill on her so you might get some assists. However, do what you can to save Jinx, die for her if it's needed.

Kai'Sa

From what I experienced, this is a lane that depends on enemies. Kai'Sa doesn't have much range (525) so she can take a lot of damage from enemies in lane, so she needs your peel. You can decide what to do between playing defensively and protect her or staying in front of her poking enemies with your skills. In teamfights she will probably jump in the enemy team with her ultimate so you have the choice to follow her or try to focus your abilities on other teammates. If she is fed, try to save her with all you have. Use Flash to ult her if you don't get in range fast enough.

Kalista

Kog'Maw

Kog'Maw has a power-spike after he gets Guinsoo's Rageblade, it beautifully stacks with Lulu's W and he can deal more damage if you cast E on him having Ardent Censer. He may be weaker in the first levels, so you'll have to be careful. If you get ganked, give him movement speed even if it costs your life. If he can stay alive and get kills, you can help him to carry the game. He could just stay still and do everything with you behind his back lol. Even if the game's not going well, don't surrend if you see a possibility to get Kog'Maw fed!

Lucian

Lucian has high damage thanks to his passive, so you can use your E to increase his damage and W on him when he engages and Q to slow down enemies to help Lucian hitting his ultimate. Enemies will try to stop him when he's ulting, so be prepared to use Wild Growth on him to knock them up and slow them.

Nilah

Enchanter supports are the best for Nilah. Try to shield her from poke in lane, save her as much as you can because she really pops off mid/late game.

Sivir

Sivir can poke a lot from afar and push fast with Q and W. It's an ADC that pushes a lot, so always put wards in the river and a Control Ward in the tri-bush to see if their jungler is coming to gank you. Sivir has Spell Shield to "block" an ability, but she has to have reflexes to time it right. She can engage/disengage with her R. She can follow her enemies thanks to her passiive, but she doesn't have escape skills (except of her R) so you have to help her with W or Q to slow enemies. She can be a best, even if none play her. Protect her a lot in teamfight, with everything you can. Her W (if Sivir critically strike her target, the bounces do so as well) plus Q can deal so much damage in a teamfight. I'd like to see more Sivirs around!

Miss Fortune

Miss Fortune can be really annoying if she's able to land her Q correctly (killing a minion with it and hit an enemy with the bounce). Enemies will try to stand in front of their minions or just near them but not behind, so in this moment you have to poke them to make them retreat. If they don't have sustain, they will be forced to stay under their turret waiting for the minions to come. Don't push the lane and carefully stay behind enemy minions, making enemies lose XP and gold and making Miss Fortune farm without problems. When she ults, she will be focused by assassins or champs that will try to stun/silence her. Example: Enemy Rengar is ulting, he jumps on your Miss Fortune in the middle of her ultimate, use your ultimate on her before he finish the jump so he gets knock-up'd. It needs a bit of reflexes to do it, but it's totally doable. Her movement speed may leave you back, so just use Whimsy on yourself to stay with her. When she is in combat, she has no mobility or movement speed at all, so help her with that.

Samira

Meh, I think that Lulu is decent for Samira just for the ult combo, but there are so many supports that synergy with her a lot better than Lulu does, like Nami/Seraphine or tank supports.

Senna

Senna needs peeling because she doesn't really have escape skills, you can help her giving her W (to escape or to chase). Try to stay close to her so you don't miss her Q and E if she uses them.

Smolder

Meh, Lulu doesn't really help Smolder especially in laning phase. He doesn't need attack speed and he has mobility already, so I wouldn't recommend using Lulu with him.

Tristana

Tristana is a mobilty ADC with several engage/disengage abilities. You are more in danger than her in lane, so try to keep your health up. Tristana gains attack range with levels thanks to her passive. She probably will go deep at the beginning, so she needs you to stay alive. Mid/Late game, things will get easier (or harder); you can focus more on other teammates instead of only on Tristana (only if you see that the player that's playing her knows what to do!). I recommend to buy Mikael's Blessing because she will get stunned or something in teamfight 10/10. Tristana literally destroys everything if she does things well. Use W on her even if she is already using her Q (better to use it when it's on cd), attack speed is damn strong on Tristana. And shield her, of course, to give her more attack speed and damage on-hit from Ardent Censer.

Twitch

I don't see many ADC Twitch around, but with a Lulu in his team, he can destroy everything. Don't use your skills on him when he's invisible because enemies can reveal him easily or guess that he's nearby and run away. Wait for him to show up and use W > E on him and R if necessary. If Twitch is fed, keep him alive with everything you have, even your life.

Varus

Varus is pretty strong, but I don't see him much. He has no mobility, but he has AoE slow with W and AoE root with R. He's all about hitting skillshots. Peel for him in the first levels, as if he could take a lot of damage. You can speed him up with W when he's charging his Q, because it slows him down. He often build on-hit items so Whimsy and Ardent Censer help him doing a lot of more damage.

Vayne

In my opinion, this is one of the strongest synergies. Vayne needs attack speed, Lulu gives her a lot of that with W and E with Ardent Censer, so she can focus on building more AD items. Vayne needs movement speed, Lulu gives her movement speed. Vayne needs peeling, Lulu keeps her alive with E and bonus health with R . Vayne has everything from Lulu and if you manage to keep Vayne alive, she'll carry your whole team.

Xayah

Xayah is one of my fav ADCs, she has a lot of damage in early levels and if the player have a brain, she can easily ged fed with a decent support that keeps her alive. Xayah can reach a large amount of attack speed thanks to her W, your W and your E if you have Ardent Censer. Xayah doesn't have a gap closer, so she needs your movement speed to engage or chase enemies. She can get easily killed if she gets stunned or hard-CCed, so build Mikael's Blessing if you see that enemies have more than one CC (like Leona, Nautilus, Fiddlesticks and a lot more). Xayah really does TONS of damage, so if you manage to get her fed, nothing will stop her. She'll be focused in every teamfight and if enemies see her alone in lane, so try to stay with her (if you see that you're probably going to die, go away and ping her to retreat, 2v4/5 is never good) and save her at any cost.

Zeri

I played with Zeri just a few games since her release, but knowing her kit, it can be a pretty strong combo. In fights, shield her off cooldown. She can be very fast and mobile, so you probably won't be able to follow her very much. Be prepared to use Flash to save her.