I recently got on the Consult+Marginalia+Corfu+Cape+Embark+orderless bandwagon, from Ivy+Counsel+Swiper. How cool of me! 
Anyway that inspired me to try to finally make some kind of progress on the autocompletetion front. I wrote one big list, a complete-at-point-function, and a hook. However, it does not work.
Except sometimes it does.
I've confused myself.