Are there technical reasons why a laptop with a 360Hz display only has 60Hz and 360Hz modes but no intermediate ones?

I don’t know if all manufacturers do this, but Gigabyte in their Aorus 17 2022 lineup made only two screen modes available: 60Hz and 360Hz. I know about the existence of programs like CRU for creating custom refresh rate modes, but before using them I questioned myself: why the manufacturer made this strict lock on only two modes, 60Hz and 360Hz, why there are no intermediate ones? And by the way, how do display manufacturers (not just for laptops) determine which modes are supported by the display? What does support for a certain refresh rate means after all? I mean when we're talking about i

Question by Alex on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.