When I saw the title I immediately thought of Xbox Adaptive Controller. It's such a cool initiative.
Microsoft has a lot of really cool accessibility tools and services. For example their extensive usability guidelines, which is a massive set of documentation for how to make games more widely accessible. [0]
They also have a great service where you can submit your games to get a report with feedback how to improve accessibility.[1] I read through one we got at my last job and it was really impressive. Very thoughtful and comprehensive.
There's a hub with links to a lot more accessibility services as well. [2] Microsoft is one of the companies which really does a lot of great things in this space.
I am surprised that we have not seen some sick setups shared on HN.