Looking on the internet deeply has found these results:

I am proud of them is the most popular phrase on the web.

I proud of them 1101,000 results on the web	I am proud of them 12,760,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	I am proud of what we have done, I am proud of the collaboration and I now wait to hear from my co I not only admit them, I am proud of them. Russians living in Estonia are my compatriots, and I am proud of them because 99 % of them remained loyal not to President Putin but to the Estonian state. I am proud of you, Emma. rapporteurs. I am proud of you Andre. I am proud that this Parliament debated the resolution on Russia, and we should all be proud of that. I am proud of you, Leo.

I proud of them

1101,000 results on the web

I am proud of them

12,760,000 results on the web

More popular!

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

I am proud of what we have done, I am proud of the collaboration and I now wait to hear from my co
I not only admit them, I am proud of them.
Russians living in Estonia are my compatriots, and I am proud of them because 99 % of them remained loyal not to President Putin but to the Estonian state.
I am proud of you, Emma.
rapporteurs.
I am proud of you Andre.
I am proud that this Parliament debated the resolution on Russia, and we should all be proud of that.
I am proud of you, Leo.