Very good. Very very nice.

Not sure all the opposites work?

Morrisette taught us all that the opposite of INVITE is not in the group you say.

"Masculine names" should be accepted. An answer should be the only thing the 4 squares have in in common, or the most general thing.

Jayem: I disagree. I mean, Only Connect walls frequently feature surnames which are not linked just by their being surnames. That is, for a category to be good, it should be specific, and therefore 'masculine names' is not a very good category.

I would never have gotten the REM connection, it's just knowledge I don't have. Is that the grid at fault, or me? Or a bit of both? I think these first names are too generic to make a good category, and surnames have been better (I still wouldn't have known them but might have been able to make a guess.)

Anyway. I'm overthinking.

Have to disagree also. If a more specific connection applies, then it has to be the 1 that counts. On the TV show I distinctly remember "Surnames of actresses in Mad Men" & "Editors of Punch Magazine" being solutions.
If a single word generic answer SURNAMES was accepted as an answer, the whole thing would descend into unsolvable farce.

Also, unique solutions would become a thing of the past.
e.g. G.1 = UK Prime Ministers, G.2 = Colours.
If G.1 contained BROWN, and SURNAMES was accepted as a solution, then Black, Green or White from G.2 could be swapped with BROWN.