This conversation probably isn’t going to go the way you expect or would like it to. But with more and more of us getting M1 Macs, I figured I might provide some helpful info.
I managed to get a Catalina 10.15.7 VM running in VMware Player 16, hosted on Windows 11 with an AMD Ryzen 5950x. It is possible if you’re desperate.
I will not be sharing instructions here because doing this violates Apple’s license, which means it would almost certainly be against Xojo’s rules. The other reason I’m not going to write up instructions is that I can say with confidence: don’t do this.
There are lots of guides out there. It took me cherry picking facts from about four different guides to get it figured out. I also needed to generate fake serial numbers, ROM identifiers, and “borrow” a MAC address. And it was strongly recommended not to use my actual Apple ID, in case Apple blacklists it.
So that’s my helpful advice: don’t do it. It’s neat, it’s technically possible, but don’t do it. It’s not worth the effort.
On a similar note, @Anthony_G_Cyphers spent some time trying to get UTM working to emulate macOS on an M1 machine. I haven’t tried it myself, but based on his experience, I won’t be. Don’t waste your time with it. Guides are limited and performance is much worse than you’d expect.
Keep those Intel Macs around folks. Maybe some day Parallels and/or VMware will add emulation to their products, but it’s not today, and I have my doubts they’d even bother since emulation isn’t their business.