I think maybe you misunderstood; nobody in this thread is claiming the US has backed Russian rebel groups.
The Ukrainian-backed paramilitaries aren't rebels because they support the government.
Many of these are right-wing militias that have been fighting in the Donbas since 2014. Some have been absorbed into the UA national guard.
I have never mentioned pro-Russia paramilitary groups; I think you and the other commenter got confused because I didn’t explicitly say Ukrainian paramilitary groups. (Thought it was obvious from context which side I was referring; obviously the CIA would not be supporting pro-Russian militias)
Plus, you didn't answer the multiple times when asked to clarify.
Also I have vouched the top comment of this tree because I consider this point as valid.
None of those are “rebels”, which is the term you used.
> Some have been absorbed into the UA national guard.
The National Guard of Ukraine is one of the “paramilitaries” on the list you linked, so, yes, it is fair to say it has been absorbed into…itself.
> I have never mentioned pro-Russia paramilitary groups
You said “rebels”. The only rebels in Ukraine are those forces consisting of Ukrainians (as non-Ukrainians would be invaders, rather than rebels) fighting against the government of Ukraine, i.e., Russian-backed and Russian-aligned armed groups.
Boy, Ukraine have never had a proper borderline with Russian, I mean most of that border was nothing more than just demarcation sticks.