Nice grid but big zero for me. I guessed two of the answers while doing the puzzle, but could not see them in the grid.

Waaaay too many crossovers dude. Knew 2 of the groups straight away, but so many possibilities rendered it quite hard to sort them in time. Also the names line is a little vague in the context of the grid.

too difficult to get started - too many possibilities for each - give us a chance

How is the correct answer to the second group not First Ladies...?

Same thing isn't it? Nit pick away though.

I have seen much harder grids to get started on. Thought this would be fun

Not much fun I'm afraid. Try to put yourself in the place of the puzzle solver, and maybe spend more time thinking through fewer and higher quality puzzles rather than outputting loads. The Beatles line, for example, is 3/4 great, but "Valerie" ruins it because no one will remember that from inside the song, wheareas the other 3 are in the title.
Also, pointing out alternate legitimate answers that are not accepted is not nitpicking. Others may enter variations of correct answers that you need to consider and allow for.

Blimey - I didn't get bollocked this much at school.

Hmm. I think I might have to agree with the people saying this is just too hard. The issue for me was that I got the Beatles connection straight away, but as literally every clue is a woman’s name from a Beatles song, I just couldn’t figure out where to start. Red Herrings are one thing, but making 75% of the clues red herrings for one row might just be taking the piss a tad!

Not for me this one. No "in" to it. Potentially 1820 combinations to go through in 3 minutes just to get one group. That's too demanding for me.