Don't forget Chakotay's psychedelic gameboy thing.
I thought that was a pretty creative original sci-fi idea.
In that aspect at least, his spirituality wasn't stereotypically generic.
24th century technology that replaced hallucinogenic herbs. He said it himself.
Nothing new there. The entire point of hallucinogens is to get in a trance state. Because that's where spiritual work is done.
And a trance can be achieved by drumming or chanting or saying the Rosary, among other things.