Gray is a color, while grey is a colour.

E is the European version, A is the American version. This sounds trite, but is true, and makes it simple to know which one to use

I know it's an American vs other English speaking countries thing, but as an American I can honestly never remember which one we are. I always used to look it up, but now I just shoot from the hip and assume I'm right, which feels the most American way to approach it.

Yes

I think it's a USA vs European English thing.

I prefer the 'grey' spelling though, even though 'gray' is most common in the states.

Gray in the US. Grey elsewhere.

It's pronounced gay ya twats

Yes

Either way is correct.

Grea

Yes

Depends who you ask.

We know someone named Gray and a different person named Grey!

‘Grey’ refers to the colour.

But ‘grey’ and ‘gray’ can also be surnames.

for the color i use "a" always.. but was taught either one was acceptable, unless it's a name (proper noun).

Gray is the correct spelling 🦅🇺🇸🎆🎸🤼‍♂️🍖

Gray in the U.S. presumably because a was cheaper than e for typesetting

Depends on where you live. There are American and European spellings for some words. IE color vs colour

"Grey" is British English, "Gray" is simplified English AKA American.