NinSheetMusic is 16 years old!
But doesn’t RtDL have the bosses in order too? I’m pretty sure it did, though I haven’t played it for a while.
Yet another beautiful thought consumed by the monstrous sewage system.
No it's not in order, though the last few (i.e. Lor, Magalor) are fixed order.
I think the arena(s) in Super Star Ultra had the last few bosses in fixed order, so that makes sense.