Hello I'm searching novel about creating bunch of games. Similiar to Almighty Game Designer Losing Money to Be a Tycoon Game Market 1983
The closest I know of is Data Dragon Danika. MC starts playing a VRMMO, and ends up working for the company that made it doing things like bug "fixes" and designing content updates. She primarily works on the one, already completed, game, though.
I wish I have read those you mentioned, but sadly it isn't a common theme like isekai or cultivation novels.