Just saw Peggy McCay (Caroline Brady) on an episode of Cagney and Lacey. Apparently she was nominated for an Emmy for Outstanding Guest Performance for this role.
Also, I recently spotted Brandon Barash (Jake and Stefan) as Detective Robby Oderno on several episodes of Major Crimes.
That reminds me that a month or two ago I watched an episode of Alfred Hitchcock Presents on Peacock, specifically because it was listed as starring Macdonald Carey. What was not advertised was that in the episode, Peggy McCay played his wife.
Several DAYS alums have appeared on Good Trouble. I've seen Allison Paige (Bev), Terrell Ransom Jr. (the original Theo), and Brandon Barash so far.