Thanks for the compliments
If you're asking about Dr Mario clones on the Dreamcast, as far as I'm aware Moving day is the only one (Aside from NES/SNES Dr Mario emulation ofc). However I might be wrong and if there's another I'd be interested in checking it out.
A google search showed this clone from 2008 that looks really cool (But no apparent source code
I don't know of any others, but I've asked one of the Dr Mario discord groups if they know of any. (Link here if you want to join: https://discord.gg/fpPGxH