FTR, I don't know that the mages of the Renaissance were all (with perhaps the exception of Bruno) looking to subvert Christianity, per se...there were just undercurrents flowing around that I think many folks would deem non-Christian, even today. That said, yours is an interesting observation, and I agree...hard to tell what the "original" was. All of these movements I guess would participate in "The Platonic Underground," per Dillon, though that may be more of through line than anything else.

Alternately, who says that the incipient form of a concept is any more "true" that latter stages? I reckon it's true if it jibes with things active in the cosmos...

All good fodder for contemplation, though...