Complete save! File 1 is 100% complete with all stages and special features accessible. File 2 has all stages clear in the main game but no heart stars collected, allowing you to re-challenge any of the game's first five bosses as often as you like.
I may try the new ram site, and download more RAM to my Switch. Not sure if ddr3 is the right ram
for it tho. Edit- no it uses floppy Ram, just like @AncientBoi