@telec16 did some Kosmo modules too back in the day.
The definition of ‘Kosmo Conversion’ seems a bit gooey. There are modules that are built around Eurorack-(or other-)intended PCBs, ones built around Kosmo-intended PCBs with the identical circuit, ones where the circuit has a few minor tweaks, ones where there are larger modifications to the circuit, ones with really substantial changes… not clear where to draw that line. I’ve been using the tag only for modules that use the original PCB, especially since once I start laying out a PCB I almost always end up making some changes, but it looks like that’s not the universal interpretation. (And then just to make things worse, one of my dual VCAs uses the MFOS PCB and the other, electrically identical with identical front panel, uses my own Kosmo PCB layout.)