Well, I know two of the 100 musicians playlisted (Autechre and Coil--plus of course the folks you discuss in the article proper), so I've got some catching up to do. Thank you for these resources.
Yasushi Yoshida from Japan is building some interesting instruments, e.g. https://youtu.be/VP7vrFnlmWw
Raymond Scott is a fascinating early pioneer.
Some gems I've picked up from thrift stores:
https://youtu.be/QsMqGO9yggY (not electronic but "found" instruments, e.g. a broom in this case)
https://youtu.be/9vtRXbnzqL8 (early sampling and tape manipulation; more info: https://www.spaceagepop.com/fassett.htm )