Welcome to the forums!
Imo I have all the BMS (BeatMaps) from the rhythm game packs.
Then again, it doesn't hurt to dive in to music from everywhere else too.
Here are some, also idk if you play only standard. I do all modes.
M2U - Myostosis (CtB)
Memme - China Dress (std)
Memme - Cherry Blossom (std)
Red Velvet - Russian Roulette (std)
Heads up tho, you can't ask for other beatmaps to be made. You gotta make them yourself.
I'm trying to get Waterflame - Clutterfunk in as a std map lel.
Don't ask me for mapping though, ask people like
Tae.
Have a drink as a welcome too. (^-•)7cU