From mid to late October I took three ICEs -- Brussels - >Köln, Düsseldorf -> Würzburg and Bamberg -> Berlin. I would say a majority of the people in our 1st Class cars were wearing surgical masks. The rest FFP2/N95 types. Didn't see anybody not wearing a mask while in the aisle, but I wasn't inspecting everybody

On Berlin public transit it was the opposite, a few surgical masks and the rest FFP2/N95 type. We got "inspected" once and the guy was only interested in if you had a ticket, not what mask you were wearing.