yeah, there are too many to name. the reason for the controversy is simple: he often manages to hang with or even beat characters that are much stronger than he is and that pisses off a lot of people who don't like wolverine. thing is, it is often the same 'type' of character he hangs with. imo wolvie will almost always have at least a SMALL chance against anyone who simply stands there and brawls with him. i mean goes h2h -- no weapons, no flight, no blasts. characters like hulk or thing or sasquatch or abomination or wendigo or . . . etc. they are brawlers and though they have good durability they can and HAVE been hurt repeatedly by wolvie whose claws have been proven over and over again (despite what people think should be logical) to be able to cut through nearly anything and wolvie has in general been shown to have great durability himself.
characters with good versatility or a way to evade or attack from long range, have a definite advantage over wolvie if they fight with a brain. characters like storm or ironman or . . . etc. that's also why i think spidey wins the majority over wolverine. against powerful brawlers though, wolvie will usually have a chance. despite how much people refuse to accept it. the proof, after all, is in the comics. 😉