There is some debate about exactly what a bloodred is, but to me, it consists of three genes - diffused, masque, and a reddening gene, usually red factor.
Diffused is the trait that makes the snake have a clear belly with no belly checkers. It also cleans up the side pattern, which is why it’s called diffused. Diffused is almost always combined with masque, so much so that you will almost never see someone list a corn snake as a diffused masque. Usually they’ll just say diffused. Masque in general gets kind of ignored anyway though!
Masque is the trait that creates that ‘bald’ head pattern. It also will create split belly checkers (in the case of diffused plus masque, the belly checkers will be completely gone).
Bloodred would be those two genes, plus a gene to make the snake extra red. The original bloodreds were a brick red color and over time, as the morph has been outcrossed, they’ve gotten more orangey. Personally, I reserve the bloodred moniker for diffused snakes that are solid red.
In the case of the original snake, it could possibly be considered a bloodred, but I don’t think it’s quite red enough to be carrying a red factor gene. And it still has quite a bit of pattern visible.
All that being said, lots of people still use diffused and bloodred interchangeably. If someone wanted to call this snake bloodred, I wouldn’t argue.
I went into a bit more depth here if you want to do some more reading: https://community.morphmarket.com/t/morphpedia-corn-snakes-diffused/24529