I’ve run into this in a few places now, it’s interesting! Links of Interest:

• Tedx talk: Gifted, creative and highly sensitive children
• Explainer: Why Gifted Kids Are Actually Special Needs

I was in Gifted And Talented Education in grades 4-6, and in advanced/AP classes after that. I have a lot of the “adult gifted kid” traits, including a fixed mindset (working on that) and impostor syndrome (working on that, too).