Based on this article there were 40 members of the United States Naval Academy who graduated in 1874 with only 4 links of 40.
John Marshall Bowyer
https://military-history.fandom.com/wiki/John_M._Bowyer
Edward John Dorn
https://military-history.fandom.com/wiki/Edward_John_Dorn
George T Emmons
https://military-history.fandom.com/wiki/George_T._Emmons
Cameron Winslow
https://military-history.fandom.com/wiki/Cameron_Winslow
Also found a USNA yearbook from 1874. Have yet to verify members of yearbook and zero evidence of dates?
https://pow-mia-kia.org/military-yearbooks/navy/us-naval-academy-annapolis-class-of-1874/
Found the annual register for the USNA dated 1874-1875
The graduating class of 1874 had 30 midshipmen and 10 cadet-engineers
https://ia801501.us.archive.org/25/items/annualregiste18741875unse/annualregiste18741875unse.pdf