Just pick MF/Lucian.. Lol there you have your freelo now.
TLDR; pick MF, jinx, lucian
But in all seriousness MF is relevant at all stages in the game and bullies lanes like Draven
Kalista is good at extended trades and is practically even godlike with a good support.
Draven does the highest raw ad damage from autos but if enemy mid gets fed its pretty much rip
Vayne is good but it either turns into a lane at the mercy of your support or a farm lane if you are doing bad. Best tank killer in the game
Lucian is probably up there with MF but he bullies even harder and is well vs pick comps.
Twitch is fun and shreds entire teams but at the risk of constant rengar, vi, malphite picks..etc
Varus.. Well he is good with cc lock supports but a terrible duelist
Sivir is okay. The entire comp can benefit from your ult and she counters supports like Leona, blitzcrank, and thresh zzzz.
Caitlyn is a lane bully with high range but awkward damage ratios late. I usually build runaans w her for constant headshots but she seems kindve feast or famine in lane like draven. If you lose to vayne or jinx its gg
Jinx is probably one of the other great solos champions because she can snowball after losing lane and aoe crits really make it easy to teamfight with
Graves is bursty but is so vulnerable to errors in trades. Reload is annoying..
kog: just don't unless you think the game will carry out till 30 min with a decent team
Urgot: don't
Quinn: okay.. I prefer quinn jg
Tristana: safest ADC, has self peel, good damage, and good waveclear, best siege and spltpush
Ezreal: he actually snowballs really hard but in kill lanes of your support gets hooked or CCD there is nothing you can do about it tbh. He can burst well and siege about as good as cait and jinx.. Highly mobile and annoys practically every bruiser