Easter eggs or things I may have missed

Okay so I am just starting my journey into the cosmere verse and have read a bunch so far and am completely loving all of them. Sanderson is slowly becoming my favorite author. So far I have read mistborn era one, the eleventh metal, Elantris, the hope of elantris, the emperors soul, warbreaker, and just finished the way of kings. And since there is a lot of information in all of these I’m wondering if I’ve missed any connections or Easter eggs from the stuff I’ve already read. I don’t want to look anything up cause I’m determined to go through these spoiler free. So was wondering if anyone could tell me things I may have overlooked from the books I’ve already read that aren’t spoilers to the rest. I am already aware of hoids appearances throughout all of them and excited to see what that’s all about.

Also im not sure what is best to read next. I’m thinking either words of radiance or shadows for silence but not sure which is the better choice or if neither is