Datasheets for old switch PCBs?

[kelvinhall05]

Hi guys, looking to expand my PCBs into much more exotic switches that I can't find KiCad footprints for, so I figured I'd make my own. To do this, I need a datasheet for that switch's PCB footprint or spacing or whatever you want to call it. However, I have been unable to find any. I don't have any specific ones in mind at the moment, although I would be interested in ones for Cherry M7, 8, and 9, SMK vint linears, and several others. Bonus points if there are plate cutout measurements, too. Thanks!