Sometimes the builders are also the carpenters. I would go with one of those because they will do arguably the most important part right, and they will likely have worked with the foundation team before. Electricians and plumbers often have to be certified so there is less concern there.
Getting educated so you can ask questions and observe that they properly seal the house for air and moisture is a good idea. PGH is a good resource and so is Matt Risingers channel (Build Show).
Consider tapping networks. If you find an architect you like they may know a good builder and vice versa.
Matt's channel seems to focus on innovative technology. For a slightly more traditional approach to a "spec" (speculative) house-building process, see
the "Essential Craftsman" series of 150 videos by Scott and Nate Wadsworth
https://www.youtube.com/playlist?list=PLRZePj70B4IwyNn1ABhJW...
Scott is the builder, and Nate, his son, the videographer and editor. The subject matter is clearly and honestly explained, and the video, sound, and editing is generally professional quality. From survey and site prep all the through to finish and completion, I would recommend it to anyone in the US considering a bespoke or custom home.
This is probably true in the US, but in UK/Europe most buildings are made of brick/stone. People seem to think builders are dumb, but it's a very complicated job really if you are working on lots of different types of housing.
Getting educated so you can ask questions and observe that they properly seal the house for air and moisture is a good idea. PGH is a good resource and so is Matt Risingers channel (Build Show).
Consider tapping networks. If you find an architect you like they may know a good builder and vice versa.