This looks like an anemic HOCON[0] clone.

0 - https://github.com/lightbend/config/blob/main/HOCON.md

HOCON is so overlooked but an almost ideal config language in my eyes. The only element I'm not 100% on is unquoted string values (the norway problem but not quite as bad since there isn't no/yes booleans), but even thats not too bad.