Is this supposed to be the definitive thread for keycap profiles? Because it seems to be missing some. I don't see KAT nor OSA at least.
I don't think it's really meant for that. It's more to show a type of plastic mount that could be used to compare different keycap profiles side by side. It hasn't really been updated in almost a decade, so it's a time capsule of the hobby circa 2015.