There are none!
Pres Bush Sr.
Mark Harmon of "NCIS"
There are several famous poets that are graduates of Englewood High School in Chicago. The most famous is Gwendolyn Brooks, who won the Pulitzer Prize in 1950 with her book of poetry, 'Annie Allen.'
Stanford
One of the most famous people to graduate from Centenary college is Algie D. Brown. He was a democratic member of the Louisiana House of Representatives from 48-72, and began a committee in 1960 to investigate communist and socialist activities in Louisiana.
No. Most West Point graduates serve in the United States Army.
Ronald Reagan went to community college and didn't go further.
The possessive form of "graduates" is "graduates'."
New England Patriots
During a deep, long recession, most employers are reluctant to hire anyone, graduates as well as those who didn't attend college.
There is no specific collective noun for graduates, in which cas a noun suitable for the context is used; for example a throng of graduates, an assembly of graduates, a group of graduates, etc.