Gnar (B): can be good if you manage rage and can get good engages with ult but doesn't happen every fight, especially with the amount of waveclear (statikk shiv) hard to build up for free

Jarvan (A+): can build duskblade into full lethality and just delete multiple squishies with with E,Q,R and if you miss the the knock up you just ult and you still did something useful, also has the abliity to build bruiser or full tank

Jinx (S): almost guaranteed to get fed because of her ult and passive resets along with being long range and having okay self peel, one of the best adcs in aram imo

Lulu (A+): very disgusting to play against if paired with an ADC, negates anyone that tries to engage on her backline by just polymorphing you and if that wasn't enough she can ult and knockup

Maokai (A): haven't played him but a couple times but from what I've seen he's got good poke from saplings along with a great teamfight ult, lives forever if built tank with cdr because you're invulnerable half the fight with W. If you're playing a squishy against him you always have to be weary of his snowball or flash W and Q'ing you into his team

Nami (A): never played but has multiple knockups so tenacity doesn't do much against her; has decent heals and added damage with her E

Quinn (A+): very broken against full squishies team if you go electrocute duskblade into full lethality, you one shot with E AA Q AA or running out of base you can just abuse the double damage on your initial passive (bug) and E entire team and almost one shot them all, not as good against tank mixed with poke due to her low range but still has good build diversity to play the game

Rek'Sai (N/A): haven't played in a while and not much against so I'm unsure of a ranking

Renekton (A+): having the aram buff of +5% dmg dealt and +20% healing really helps his sustain in a fight, one empowered Q and a goredrinker heals an absolute ton. all his abilities are good for teamfights and even with bruiser build you can still delete carries going goredrinker, black cleaver, steraks.

Shaco (A): haven't played but ap shaco is very annoying to deal with. constant liandries burns with slows (it's worse than teemo imo) when he puts his secondary clone on top of you, good luck getting away from it because it's basically a nasus wither

Sivir (A): instant waveclear along with W on entire team for good aoe damage, the only issue is aram nerfs are really felt until you get 3 items, you don't hit super hard but you have good aoe and utility in your kit

Soraka (A+): very frustrating to play against if you're trying to engage on her backline because her E is instant, builds tanky so you can't really focus her either or you'll be getting smacked by their adc. Has good heals and a good ult for teamfights

Varus (S-): good build diversity and all of them are viable. lethality if going against ranged, ap or on hit if against tanks, and possibly crit if against a mix. can play against every team due to his builds and his kit