Irelia is an actual fighter/bruiser who goes tank after Trinity Force/guinsoo's. Yasuo is not a fighter in my opinion even if he's classified as one. The rest are fighters or bruisers besides Yi.
Fizz and Ekko are mage/assassin things that are not fighters. Tank ekko is just like a Tank Akali, people build him that way because they see he can deal a lot of damage while being hard to kill. Akali hasn't been that good going full burst.
Diana was supposed to be a fighter, but they messed up with her kit and people play her like an assassin. She's probably the only one that can be called a light fighter as her shield can protect her in fights and she's naturally an off tank.
Otherwise, don't call the others fighters unless they really are one. Classify them as what they really are please.