You should see the backlog of videos I've recorded but not had time to edit or post!
What aspect of Xamarin / .NET Maui and Umbraco are you most interested in? Say, just getting data from Umbraco the the Mobile App and stored in the local db? Or creating screens programmatically, from templates controlled by the block list? I'll do my best to write something up.
I'm running behind on everything right now. DM if you have specific questions I'd be happy to try and answer. All the best!