I recently received the IMSTO cherry stabs I ordered, honestly I had no idea what exactly I was ordering at the time, I order stuff like that to use them as potential future spare parts
They turned out to be extremely decent pcb mount cherry stabilisers, the moving part is simpler than the ones I clipped on my V60 plate mounts, they don't have the feet that cause the mushiness
I also thought I was ordering just one stab, yet one set includes many wires to cover almost all configs of keyboards, haven't counted the stabs yet, but there are a lot
These Gateron ones seem to be plate mount ones, they have the feet that cause the mushiness, and like you mentioned, I haven't come across a simple place that sells the plate mount ones, yet people link the electronics providers as sources for those as far as I remember