I just found out it’s called professional line and it’s a thing. A streamer I watch has a mostly adult community and without fail every time he puts out a merch line there’s people asking for the professional line. Its basically the clothing blanks with no mayor logos and maaaaybe a tiny monogram somewhere that blends in.
Granted his shirts aren’t usually just solid color so a professional line makes sense, they have some sort of pattern or are dyed in weird ways and then have his art on it. He hasn’t put out merch with just his name since the early days, it’s actually cool stuff now.