Saw the reveal for Overwatch and a few things looked familiar...
Not accusing anyone of being a ripoff, LoL is just as guilty of using these tropes and takes huge influence from pop culture and mythology as well. But it's interesting to see such similar archetypes.
Outlaw/Cowboy archetype
Unnamed character from wallpaper / Graves
Angel-like healer
Mercy / Kayle
Sexy female sniper
Widowmaker / Caitlin
Asian-inspired mystic fighter who talks like he's quoting Confucius
Zenyatta / Lee Sin + Master Yi's multi-eye helmet
Stoic Japanese samurai character with hair tied back
Hanzo / Yasuo
Agile scout with attitude and short range teleport
Tracer / Ezreal
South Asian inspired female character
Symmetra / Karma
(note the similarity of Symmetra to "Sumatra", an Indonesian island)
Mechanised winged anime-inspired female trooper
Pharah (no near match in LoL)
Badass darkness-themed dual pistol wielder
Reaper / Lucian + Nocturne + Sith lord
Intelligent simian with a rage mode
Winston / (no match in LoL, he's closer to Beast from X-Men. But Volibear comes close, he's just a bear, not an ape)
Pint-sized engineer
Torbjorn / Heimerdinger
(not a great match, Torbjorn obviously draws more from the Dwarves in WoW)
Fully robot character
Bastion / Blitzcrank
Giant armoured mace/hammer wielder
Reinhardt / Mordekaiser
Skin matches
Fat but strong dude
Unnamed dude from wallpaper / Vandal skin for Gragas
Cyborg ninja
Unnamed cyborg from wallpaper / Project Yasuo skin