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Re:Symbolics Lisp Machine demo (2013) [video] by setpatchaddress on Tuesday April 27, 2021 @08:09PM (#26963789)
I've never used it, but Oberon running on bare hardware might qualify if one is OK with Modula instead of Lisp.

https://en.wikipedia.org/wiki/Oberon_%28operating_system%29#...

Re:Symbolics Lisp Machine demo (2013) [video] by pjmlp on Wednesday April 28, 2021 @01:22AM (#26965895)
Oberon uses Oberon, for Modula-2 that would be Lillith.