It seems like they are top lanes, and jungles, and they can be bruisers or duelists. so can someone give me an accurate description of a fighter and what they are supposed to be doing for the team. Lately it seems like they are supposed to be dedicated OP champs.
From a NON ranked players perspective.
a "fighter" is a melee, tankish, CC inducing, PEELER for your squishies/focus their squishies.
this is as simple as i can make it for myself.
Remember that i am not a ranked player, and im no stat cruncher so take it as you will
It seems like they are top lanes, and jungles, and they can be bruisers or duelists. so can someone give me an accurate description of a fighter and what they are supposed to be doing for the team. Lately it seems like they are supposed to be dedicated OP champs.
The "fighter category"? You mean those terms in the sort feature on the website, right?
Sorry, but I can't give you an accurate description of a fighter and what they do. No one can because it's really just being used as catch-all bucket for champions who don't fit the other categories. You look at those and the only things you see in common is that they are, like, melee range and that maybe they are a bit tougher building some tanky items for defense since they are up close range. Wait...
"melee range" 
"bit tougher building some tanky items" 
I really was going to say that but it turns out it can't even be used say that much about the champions. The tags really are pretty meaningless and you're better off not overthinking it and just ignoring them.
