Long March 10B is a thing now, apparently.
Most netizen seem to believe it is the commercial/non-CMSA version of LM10A, and this is probably relatively close to the truth, but in fact we aren't sure.

I think it's best understood to LM10A as what the LM8/8A is to LM7, a Chinarocket-operated derivative with possibly new launch infrastructures, various cost-cutting improvements enabled by the lack of Crewed spaceflight requirements, and maybe even more deeply modified stages (we do know that Chinarocket is interested in 5m diameter Methane stages).