Basically any word or short phrase I can think of to mean “a lot of muscle” also implies skinny or almost no fat. Fit, or lithe bring to mind more a track athlete’s body, and buff, ripped, jacked, muscular, ect. generally are though of more like a body builder. The closest thing I can think of is dad-bod but thats obviously still pretty far off as well as being male-specific. Is there even an English word for this?
There’s a lot of words for it. Bulked is the one that floated through the gyms in my area. Even body builders do bulk cycles, which is essentially all that power lifters do. So the term is about having increased muscle mass, with no other factors involved.
I’ve seen beefy used plenty, as well as built. Both get used as a generic term for having big muscles, with the exact usage being variable between a more ripped look and the more massive look. But I see beefy used more for the body type you’re asking about than for body builder types where cutting fat for competition or personal preference changes the appearance of the body. Built rarely has a specific connotation in my area when referring to men.
Terms shift though. Buff, jacked and muscular can fit depending on where you are and when you are. For example, muscular was a pretty common description of a generally athletic build that was less focused on size but still had size, like how boxers and wrestlers (as in not “pro”) get as they go up in weight class.