I'm pretty sure Agent Carter would be canon, it was created by Markus and McFeely, and they brought James D'Arcy as Jarvis into Endgame, and as far as I know it has never been contradicted by anything that's come after it.
Does it actually say point blank that that stuff was not canon, or just that they chose to only focus on other stuff for the book?Originally, The Runaways, SHIELD, Cloak & Dagger, and Inhumans were all supposed to be part of the same MCU and were removed from canon when Marvel Studios published their MCU timeline (EDIT: this is from my failing memory and could be incorrect in how we learned they were not part of the MCU.)
