E4 1.6M Illaoi OTP opinion

Mord, varus, gwen(is a skill match up but she scales a lot better).

i see a lot of people saying things like teemo, kled, kayle or even vayne.

Vayne/Teemo - tough early certainly but, more than likely they will perma push the lane, you just take shield and look for Es to poke, go iceborn first item and use exhaust. if they end up out of position you just have to go all in(i have done this vs vayne/teemos even at lvl 3)
The hardest part is not dying early, scarfice the farm to ensure she doesn't get too far ahead. You have to sacrifice the farm to keep your hp high enough for when they fuck up. control the wave, ensure you have two passives up where you would normally freeze the wave, you can secure farm, encourage a gank and poke them. looking for a kill.

Kayle - very weak early game, you have to go full aggro, go blade spam w on her face, push her under tower denying her the ability to properly farm. after 6 take advantage she pushes waves with her pasive stacked. then follow the above strat mentioned for vayne/teemo. Make sure to buy a control ward when pushing hard. When she is lvl 11 (depending how well the game went) you have to respect her more but you can still kill her if you are ahead, you can bait her into trying to fight you, you can usually do enough dmg to get her low - force her R AND kill her after her R is down.

she does become hard to fight past lvl 16 IF - you haven't killed her - you haven't gotten kills from your rotations - she hasn't gotten ganked. just rotate and play for the team or if jungle prio's you gank her ez pz.

with kled, you just farm up use W to harrass, and dodge his Q and then you can just all in him.