Hi - welcome to arcade projects! I had the same question about 12 months ago. Advanced version was everywhere. The standard version (through hole components) never made it to a full and final release.
Lots of references to the standard version online but I could not find the files to manufacture the boards. I've had another look now, and confirmed that if they are out there I still can't find them
So this encouraged me to learn how to solder SMD components, first with hot air, then with a microscope, now drag soldering with my eyes closed.
Strongly recommend that you give SMD a go, you can buy some of those SMD practise kits off aliexpress/banggood/amazon for next to nothing - and there are millions of awesome projects out there that use SMD too.
The KSGER T12 stations are amazing value and easily capable of even the most fiddly SMD work.