Asrock has ITX boards in current generation with interesting IO design detail that could be game changing for console style cases if it became mainstream practice across board vendors : r/sffpc
Micro ATX Motherboard VS Mini ITX - Fodenn
KINO-EHL-J6412 Mini-ITX Industrial Motherboard
Beginners guide to motherboards: What's the difference between Mini ITX, Micro ATX and ATX? - YouTube
Everything you need to know about mini-ITX | Digital Trends
What is a Mini-ITX motherboard? A Brief Breakdown of Motherboard Sizes
Mini ITX Dimensions (includes IO shield and AM4 holes) | 3D CAD Model Library | GrabCAD