Gregory's ServerBamboo ink first gen.
The only downside of this pen is 4A battery. I tried to find rechargeable one in my local market but without success.
I also use one for math at collage 😜 with Dell Latitude 7390 2 in 1. (Of course on GNU/Linux with xournal++) Actually this pen supports not only AES 1.0 but also some M$ protocol you can switch by holding two buttons.
Finding information about protocol support in both digitizers and stylus was hard...
@itmodulo hard to find these rechargeable...
... but sometimes you will find them as 6 total inside a rechargeable 9V battery. check online if that is the case in your region. I did find them a long time back here in China