If I had to choose my all time favorite anime it would definitely be One-Punch Man. One-Punch Man is an anime with great humor and emotion. What makes the main character different from the rest is being an ordinary human while the other characters have unbelievable abilities. It's quite interesting because the main character over rules/powers the rest of the characters despite being a normal human. With one punch, the main character destroys the enemy completely. However, with such ability at hand came lots of time and training until the main character became bold.
If you love one punch man you should check out Mob psycho 100 it's made by some of the same creators I think. Also a huge fan of one punch man! I can't remember exactly but there is some cool history behind one punch man and how it came into anime form. Something to do with multiple artists I think. Also, I don't think they ever intended it to be as big of a hit as it was or something like that. Anyways huge fan <3
My favorites are
Fairytail
one punch man
attack on titans
sword art online
steins gate
angels of death
bleach (except the end)
Tokyo ghoul
idk I love anime so there's some of my tops favs I guess