Looking on the internet deeply has found these results:

They are here is the most popular phrase on the web.

Here they are 1947,000 results on the web	They are here 1147,000,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
here he is/here we are/here they are etc: I'm waiting for Linda. Oh, here she is, coming up the drive. here's/here are: Here's the doctor now. here come/comes:. relate to a past period, they must be deemed to be recent if they are less than a year old (here, they are one month old). eur 1 day ago ... Best Buy's Black Friday Deals: Here They Are. Hot on the heels of Target and others, Best Buy on Tuesday announced its Black Friday deals. 2 days ago ... HERE THEY ARE... Nordan Shat. SubscribeSubscribedUnsubscribe 817,115 817K. Loading... Loading... Working... Add to ... lex.europa.eu. eur lex.europa.eu.	It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

Here they are

1947,000 results on the web

They are here

1147,000,000 results on the web

More popular!

here he is/here we are/here they are etc: I'm waiting for Linda. Oh, here she is, coming up the drive. here's/here are: Here's the doctor now. here come/comes:.
relate to a past period, they must be deemed to be recent if they are less than a year old (here, they are one month old). eur
1 day ago ... Best Buy's Black Friday Deals: Here They Are. Hot on the heels of Target and others, Best Buy on Tuesday announced its Black Friday deals.
2 days ago ... HERE THEY ARE... Nordan Shat. SubscribeSubscribedUnsubscribe 817,115 817K. Loading... Loading... Working... Add to ...
lex.europa.eu. eur
lex.europa.eu.

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.