Apple had real Unix a decade before the Linux crap was made, a bad unix copy. Nextstep was much better than Linux crap. "A budget of bad ideas" is what Alan Kay said about Linux [1], he invented the personal computer.
My 1987-1997 ISP was based on several different Unix running on Apple, probably long before you where born.
Yes, I ran it also on 68000 and PowerPC Macs. I preferred MacOS with all the MPW environment and tools on top, the GUI was much better: a full WYSIWYG text editor that also was the command line, so you could compose text, copy and paste and also execute it. But that was invented with the workspace in Smalltalk-76 and recreated with MPW.
Email me if you need help restoring it on your Mac, or if you need parts to revive your hardware. I have at least one of every Mac since 1982 (yes I know the Lisa was introduced in januari 1983) including all floppies, CD-ROMs, books, screens, keyboards mice, Appletalk. Although some parts have rusted or decayed beyond repair. I hope someday somebody will buy the whole museum from me.
The best quality Unix we ran was BSDi, you'll find some of that still in NetBSD, OpenBSD and maybe FreeBSD.
The coolest Unix was IRIX though, but that was because of the Grafix code, not the Unix kernel.
My 1987-1997 ISP was based on several different Unix running on Apple, probably long before you where born.
Apple built several supercomputers.
[1] https://www.youtube.com/watch?v=rmsIZUuBoQs
[2] Founder School Session: The Future Doesn't Have to Be Incremental https://www.youtube.com/watch?v=gTAghAJcO1o