Madman combo
Blaze out - uke and seme dynamic is kinda similar to the first trope you described
https://www.mangago.zone/read-manga/blaze_out/
Sunday's consolation - seme is flirtatious and uke is I don't remember but kinda won't take shit from anybody type i think
https://www.mangago.zone/read-manga/sunday_s_consolation/
Another lie - uke is confident and parties a lot, basically a slut but the seme isn't flirtatious, he's sweet type getting played by uke
https://www.mangago.zone/read-manga/another_lie/
Dreadful night - seme is very possessive in a hot way
https://www.mangago.zone/read-manga/dreadful_night/
Double trap - seme is similar what you describes in the alternative trope, no its not a love triangle.
https://www.mangago.zone/read-manga/double_trap/
enjoy (◠ᴥ◕ʋ)
Anyone have a Yaoi where the Uke is confident and parties alot and won’t take shit from nobody and the Seme is kinda quiet but very flirtatious- or like an alternative is that the Seme is popular and flirtatious and very sweet but is possesive