here's a bunch...maybe not all but hope you find some to like...
i didn't find it here but i think is on mangago with a different name, is the closest to your likings i think?
https://asuracomic.net/series/the-greatest-estate-developer-926ef1ac
maybe this one? modern world, hunter, regression.
https://www.mangago.zone/read-manga/the_s_classes_that_i_raised/
here are some on showbiz, reincarnated, behind the scene, gruop oriented, dunno maybe...
https://www.mangago.zone/read-manga/debut_or_die/
https://www.mangago.zone/read-manga/i_became_the_youngest_top_idol/
transmigration in a fantasy world, mc is the head of a adeventurer party?
https://www.mangago.zone/read-manga/saihate_no_paladin/
https://www.mangago.zone/read-manga/pick_me_up_infinite_gacha/
enjoy ╮(￣▽￣)╭
Do you know Manhwa about leadership such as
https://www.mangago.zone/read-manga/i_became_the_tyrant_of_a_defense_game/
https://www.mangago.zone/read-manga/trash_of_the_count_s_family/
https://www.mangago.zone/read-manga/omniscient_reader_s_viewpoint/
Thanks