Ogh, I have so many types... but probably my favorites are:
-Buff/strong ladies, especially who are kind and/or rambunctious (Noi from Dorohedoro, MY DEARLY BELOVED)
-Characters who are stoic, strict, generally just hard to read and probably scary/intimidating but really caring and protective of the ppl they care about, and/or of like animals and kids and stuff in general (sorry in advance but Mori from Ouran

I KNOW it's a bad show but he literally strikes this trope dead on. Sighs.)
-Gentle giants in general... I cannot get enough of them... They own my heart......
-I also have an emotional attachment to like tragic clowns? Comic relief characters with tragic backstories or something, or in general who go through a hard time. (Peter Quill is kind of an example? I think Richie Tozier from IT qualifies as a pretty good example, too.)
-Lumped in with above, any character who seems dumb/incompetent/is kind of brushed aside, who is like, nice and accepting until Uh Oh! They're Sick Of It! is just 👌👌👌👌👌👌 a vibe honestly!!!!! It's not a trope that's used enough for me to think of specific examples rn though. I think Touta Matsuda from Death Note is enough of a favorite and falls close enough to this that I'm going to count him, though.