All 50 original Music Block sounds in Super Mario Maker 2 (+1 bonus "sound")
All 2.0 Update Music Block Sounds:    • Super Mario Maker 2: All 2.0 Update M...  
All 3.0 Update Music Block Sounds:    • Super Mario Maker 2: All 3.0 Update M...  

A commenter had let me know that there is a missing sound in this video. Rocky Wrenches can actually make a sound if you have one bounce off a sideways trampoline onto a music block in either SMM1 or SMM2, or by use of a twister (or SMB2 Mario's throw in Ver 3.0). You can hear it at the end of the 2.0 Update video.
I will update this description and the pinned comment if any new updates or sounds are added or found.