It's called by the rather unwieldy name PMSRM, meaning "Permanent Magnet Switched Reluctance Motor".
Clean Technica has an article which takes a longish, deep dive into the tech:
"Tesla Model 3 Motor — Everything I’ve Been Able To Learn About It (Welcome To The Machine)" by Steve Bakker
Since...
The Ingineerix YouTube channel has some really great Model 3 videos. Apparently, he bought a crashed Model 3 and took it completely apart, though kept all the systems operating.
The videos might answer a lot of questions, so I thought I'd put them all in a thread. I'm not going to start at the...