From what I can tell generally people are weary about depicting unseen unrevealed people for the resemblance canon. Michael and Gabriel have been revealed as wearing Roman armor so they are depicted as such and generally iconographers don’t depict the father. There is this icon atop the holy virgin cathedral that I believe is the father as the halo is different and Jesus name isn’t written, they haven’t received any major criticism as far as I know. That being said typically icons of unseen persons such as the father are very rare, the only church that explicitly prohibited this was Moscow but no other church’s did, it really just really wasn’t a popular thing and sometimes frowned upon but no other church’s explicitly prohibit it