I can tell you my experience from working with them. The common traits:

They've never left their bubble of people that look and think like them. Even the ones with college educations only socialized with people like themselves while in schools. They never leave their comfort zone.

They're emotionally and socially immature. Those aspects of their personality stopped developing in their teens. They still act like teenage bullies and mean girls.

Their "news" consists entirely right wing propaganda. Social media, FOX "news", etc. They're addicted to outrage and they lack critical thinking skills.