The greatest beneficiaries have been rich people and people over age 35.
This is a sentence I am writing. I feel uncertain about the noun phrase at the end. I know these two versions should be correct:
The greatest beneficiaries have been rich people and people over 35.
The greatest beneficiaries have been rich people and people over the age of 35.
But are the following variants correct as well?
The greatest beneficiaries have been rich people and people over age 35.
The greatest beneficiaries have been rich people and people over the age 35.
Also I wonder if I can use "greatest" with "beneficiaries". Or should it be changed to "the biggest beneficiaries"?