I guess it isn't so much a fetish (All my fetishes are relatively vanilla and I enjoy them both in art and irl) as it is just general, physical attraction.
When it comes to art, I enjoy a variety of body types (other than anything "extreme" like hypermuscle or monster cocks... those just make me laugh). My folders are filled with bara, traps, chubby, femboys, dad bods and a bunch of stuff in between.
IRL or in non-illustrated porn though, my taste is pretty strict. Fit or slender men with average or slightly below average cocks. The only variation might be a guy who is naturally more effeminate or androgynous (but HRT femboys kill my boner every time, as soon as I see those puffy gynotits, I'm out.)