Since no one else has confirmed: Yes, the Amiga had HAM mode, and there were various pictures done (generated or scanned) that showed it off. (Something like [0] was just not going to happen on PCs of the day...). I think there were even some games that worked with HAM mode, awkward as it was.

[0] http://obligement.free.fr/gfx/modes_graphiques_fashion.png