Expression: "It's me."

[Tom]

Hi

As a native speaker, would you say that all of the following sentences are correct and natural?

1- It’s me.
2- It’s her.
3- It’s she.
4- It’s I.
5- It’s they.
6- It’s them.

Tom

[Tom]

Hello

:?: :?: :?:

Tom

[Yankee]

Hi Tom

The naturalness of your various examples would be dependent on the broader context to a very great degree. Generally speaking 3,4 and 5 would probably only be used in a formal context, and 4 in particular runs a huge risk of sounding very stilted.
.

[Tom]

Dear Amy

The whole context is just one simple question: :shock:

1- Who is at the door?

Would you say that all of the following sentences in response to this simple question would be natural and OK?

1- It’s me.
2- It’s I.
3- It’s her.
4- It’s she.
5- It’s they.
6- It’s them.
7- It’s he.
8- It’s him.

Thanks

Tom

[Yankee]

Hi Tom

1, 3, 6 and 8 sound natural.
.