If you think that modular homes mean legos and Lincoln-log style designs, then you haven't seen what's been cooking - especially in Europe. The European modular construction space is growing at a faster rate than in the United States. New technologies and design products are continually emerging at rapid pace.
Check out the ANNA. Quick assembly and designed to really LIVE outside. https://www.cabin-anna.com/anna-stay
Checkt out Boxabl. "The Boxabl mission is to significantly lower the cost of homeownership for everyone. Obsessively designed to the highest standards of quality, strength, and sustainability to last for generations." https://www.boxabl.com/about-us
PAN is a middle easter company that offers turnkey, competitive solutions without sacrificing quality. They have a variety of modular projects around the world. http://pancompany.co/projects.html
Cozy Cabins. Starting from building small cabins for small people ( kids ) Cozy Cabins has expanded it's modular projects to luxury big people homes. https://www.mycozycabins.com/