Getting more proactive, I've secured permission to add logos from Evil, Rubicon, and TGI to the font. Big thanks to their respective creators! I've already converted their icons and next is (where relevant) their AI logos.
Still trying to reach Ian McConville of Red, however. I'd also like to add the Merlin "owl" AI design (don't remember off the top of my head if it's seen in DiaBD or EMR) but don't know how to contact anyone at the MMMG about that. If anyone has contact information, please let me know.
That's all the TCs that I'm familiar with. If there are other scenarios with neat icons/logos you'd like to see, let me know, and get me contact info for the creators.