Circumcision in art has already been mentioned in the topic “Baby Jesus in religious pictures”:
https://en.zity.biz/index.php?mx=forum;ox=display;topic=121475;firstnew;cell=566
I would like to mention another work called: The Turkish Bath, by Sylvia Sleigh (1916-2010), a masculine version of the Bain Turc, by Ingres.
I found this link among others (see picture 7/20):
https://www.smithsonianmag.com/smithsonian-institution/portraiture-time-mad-men-180951151/
I read that we could recognize friends of the artist among the men represented. Did she ask them to pose or did she just ask them if they were circumcised? On the man standing on the right you can even clearly see the scar, although the color of the skin is the same.