Squirrel species in North Carolina, USA

This 6 January 2019 video from North Carolina in the USA says about itself:

Four squirrel species come to the deck each day to eat in the Great Smoky Mountains – compared to Florida which only has Grays – Chipmunk, Flying Squirrels, Gray Squirrels and Red Squirrels visit up north – and the Red Squirrel rules the daytime. Actually Groundhogs are in the yard and they are a fifth member of the squirrel family, but they don’t come up on the Deck – yet!