the 3 i posted are the only ones ive listened to! fortissimo is all arrangements/remixes of various songs from the franchise, love heart beat! is an arrangement album of songs all done in acoustic guitar, and rainbow star rabbit precure is a concept album for 2 songs (presumably opening/ending) for a theoretical season starring supreme/puca

you can still buy the latter new from here https://booth.pm/ja/items/5679462, the other 2 im not sure if theyre still available new but you can find them second hand