andysays
Love and solidarity
In a list, the and gets a comma before it. It’s what I was taught, so it’s what I do. But other styles are possible.
(Oxford, Cambridge, Stirling, and Napier are Universities).
OK, I don't think I've particularly noticed people doing that, TBH, but wouldn't feel the need to issue an edict against it if I did.
Also, Rees Mogg probably believes that only the first two on your list are real universities...