Chad Johnson was a very good athlete, not an elite one though, had good size, not great size though, and in his time he was unquestionably one of the best route runners in the league gaining separation at all levels with smooth and sharp routes, and won a lot of intermediate stuff with a blend of sharp cuts and quick acceleration, does alright with contested catches on occasion but doesn't shine in that regard.
I'm not ready to call Davis a TO lookalike(/although I understand the comp) because you're talking about the 2nd most productive receiver of all time, too much lol. He had a ton of manufactured production against inferior competition where things like missed tackles happen A LOT more often, and a lot of his bubble screens were poorly defended in general with him having way more space than he should and getting open fields by default, so I won't put his YAC ability on that level yet.