Caught in the Riley Riddle!

I feel like this is most likely not the answer given it requires some esoteric knowledge and there is no knowledge tag, but it fits all the clues

Are you an

Since -

A wild guess:

My first is 5th alphabet

My second is 5 letter state

My last will be same even if you rotate

But overall I am not that great

You are

Because:

You are a:

Fifth letter is:

Five letter states include:

The only letter that can look the same no matter how it is rotated is:

Finally:

You are:

1:

2:

3:

4:

It could be

Because:

In my opinion (and clearly yours too) this riddle is:

My first is 5th alphabet

My second is 5 letter state

My last will be same even if you rotate

But overall I am not that great

There is an extra clue in the flavour text too: