I'm looking for recommendations on who to follow; people who have a heavy technology focus and are able to provide evidence-based insight in broad fields.
Jaron Lanier is a famous futurist, but he has no social media - making him a difficult follow. You’d have to read his books and articles.
http://www.jaronlanier.com/
To be frank, Elon Musk. It’s weird because a lot of people pretend like he’s all talk, but any futurist that people will mention here probably will have done a whole lot of nothing. We may as well list off sci-fi authors.