It’s not a music video as much as it is an animation animated to match the song ( or vise versa, IDK ), but runner up would be Jason Honingford’s Squirrel Funk.
EDIT:
Replaced the Squirrel Funk link with an older video because the one I originally linked was done poorly with AI enhancement.
Hard tie between three different ones.
One More Time - Daft Punk
Particle Man - They Might Be Giants
Experimental Film - They Might Be Giants
Those are tied for top three for me.
It’s not a music video as much as it is an animation animated to match the song ( or vise versa, IDK ), but runner up would be Jason Honingford’s Squirrel Funk.
EDIT:
Replaced the Squirrel Funk link with an older video because the one I originally linked was done poorly with AI enhancement.
If you’re gonna say that, you might as well just count the entirety of Interstella 5555.
Anyway, along similar themes:
Starlight Brigade - TWRP ft. Dan Avidan
Transcendental Cha Cha Cha - Tom Cardy
Transcendental Cha Cha Cha again, but this time set to footage from the anime “Space Dandy”