Thanks. I find the second one more persuasive if for no other reason than that the building blocks must have been the same everywhere and that it is reasonable to see that a single cell consuming another single cell could very easily hijack any part of the "victim" for it's own purposes -- this could result in a homogenization across the board before the cells became complex enough to stand on their own.
But is this species or varieties ... if they all "interbreed" as it were, they would be one 'species' with lots of 'varieties' and the roots default back to a trunk.
If the generation of replicators is by the same process, it is possible to have several variations on a theme in the first ones to develop, ones that then mix and match parts at the local "swamp meet" -- and perhaps DNA and RNA [are \ result from] those variations ...