Montserrat

Blue, gray.

The fonts for sans serif like Montserrat are kind of standard type fonts.

And I said, oh, girl.

We are not.

Your text needs to be readable at thumbnail size, which means you need fonts that are bold and thick.

Impact, Bebas Neue, and Montserrat are popular choices because they stay readable even when they're tiny.

Avoid thin fonts or script fonts.

They just disappear at small sizes.