ufff, for me easy in Chicago ORD and MDW. All airports in Mexico r easiers except one in Mexico City.
In London Heathrow has 5 Terminals and yeah confusing, I lost there lol but Police from there, helped me to get my terminal.
London Stansted is small and easy but so bored.
Sandefjord Oslo-Torp is smaller and easy of course.
Other airports in main cities r kinda difficult but u can ask for help and u will be fine or, u can confirm 24 hr before u travel that u need a special assistant and u will be fine or make a new friend who travels same way to u travel.
Trust me, USA airports r better same in Mexico and in Europe uff no comments too many layovers, transits, etc and Im sure we could get lost.
