Who have PhDs/doctorates that are also grandmasters?
standard GM only eg no WGM (see there for WGM version), no International Correspondence Chess Grandmaster
no honourary PhDs/doctorates
maybe kind of a cheat but I'll allow JD/MD (and LLB to the extent that LLB=JD) i.e. doesn't have to be Doctor of Juridical Science/Doctor of Medical Sciences. Also the other stuff here eg doctor of education or doctor of engineering, just no honourary.
Regarding Emanuel Lasker, I guess I'll allow like either world champion even if not a GM. As for the kinds of world champions allowed...ah fine just all of them: world standard, world rapid, world blitz, world fischer random (wesley so doesn't have a PhD. NEXT), world team chess, World Championship of Chess Composition, World Chess Solving Championship, and women's version of the preceding.
Re CW vs new answer: I personally don't care. But sites have rules/guidelines/discouragements so whatever. See the ff 2 comments re this
@BCLC A separate answer for each doctor/grandmaster? How many answers will that be, a hundred? Is that how these sites are supposed to work? I think they should all be in one ("community wiki") answer, and I suggested adding it to yours because it's the most extensive list that's been posted. – bof
@bof ok fine now it's community wiki but i don't care personally you can post answers but if it's better for the site then fine edit cw post or post your own answer or whatever – BCLC
Adding here in case comment gets deleted AGAIN (also seriously a downvote on the question after all the time I spent adding from the article of SecretAgentMan? WOW):
Related article from ChessManiac.com (2014): The Education of Grandmasters – SecretAgentMan
@SecretAgentMan 1st thought - yeah i think i saw that at the time i made this Q&A 2nd thought (after reading more) - hell i sure i missed a lot if i've seen that post before. ok maybe i haven't. thanks! 3rd thought - ah wait...i think it's not that i missed a lot but that some that i read i couldn't find a source eg karpov, Miroslav Filip, etc. anyway adding now thanks!