Them vs. They

[Unregistered]

On finding a group of items, which is correct:

this is them or this is they

[Barb_D]

I wouldn't say either.

"Oh, here they are!"
"Oh, these are the ones we're looking for!"

[not a teacher]

[Naamplao]

On finding a group of items, which is correct:

this is them or this is they

None are correct

"These are them" is the correct choice.

[riverkid]

On finding a group of items, which is [correct]appropriate:

this is them or this is they

In addition to Barb's and Naamplao's collocations, a group of things can also be described by,

"This is them.

[borsbali]

Hello!

I would only like to add my own experience:
Both them and they can be used but with different verb suffix:

1. It is them who is coming. (more common)
2. It is they who are coming. (high English)

Just for another example:
1. It is me who is to blame.
2. It is I who am to blame.

Both of the senteces mean pretty much the same, but the second ones refer to a higher standard of speaking English.

Best regards,
Balázs.