What do you think of these names?

Audrey - yes, really like.
Clementine - A bit frilly and these Victorian names are dated now.
Charlotte (Lottie) - no. Boring and forgettable.
Persephone (love Percy as a NN) - yes, I quite like it- not sure I’d use it, though.
Clothilde - I would assume you’re French. I’m not keen.
Penelope (Penny- hmm)- yes, but not shortened to Penny - a coin of low value. Nell is good.
Dido - hm, Dido Harding has seriously put me off this.
Ida - OK. Princess Ida poem gives it good provenance. But it’s too bland.
Elizabeth (Elsie?) - yes, but I really dislike dowdy Elsie. There are better short forms.

Audrey - Coronation street old lady
Clementine - small orange
Charlotte (Lottie) - nice
Persephone (love Percy as a NN) - trying too hard
Clothilde - just no
Penelope (Penny- hmm) - not to my taste
Dido - sexual aid
Ida - nice
Elizabeth (Elsie?) - Old fashioned. Elsie is by far the nicest name on the list.

Love Clementine, like Persephone nn Percy, Penelope and Elizabeth. Audrey ok I guess, Charlotte ok but v common. Really dislike Clothilde, Ida and Dido (because of the Dildo think mentioned previously).

Ok, honest opinion -
Audrey - love it, my favourite
Clementine - dislike, makes me thinks of oranges and also "clem" which is a Northern term for starving to death
Charlotte (Lottie) - boring
Persephone (love Percy as a NN) - too try hard
Clothilde - hell no
Penelope (Penny- hmm) - quite like
Dido - dildo
Ida - very old lady vibe but I like it all the same
Elizabeth (Elsie?) - way too many of them already

Audrey - Old Hollywood glam, but the "Aud" syllable stops me from totally adoring it
Clementine - Cute! I don't like the nn Clemmie, though. It makes me think of the deep American South.
Charlotte (Lottie) - Soft and elegant, while also self-assured, it's a well-used gem for a reason. Not keen on Lottie as it only reminds me of a pudgy Victorian toddler, swaddled in overflowing laces.
Persephone (love Percy as a NN) - Percy is adventurous and YA-protagonist sounding and I like the name itself, but I would be too afraid to use it out of fear of being called pretentious.
Penelope (Penny- hmm) - Never been a fan, just too pinched-nose sounding and Penny is cute, but copper does not evoke beauty
Dido - Hard no
Ida - Ida B. Wells is a great namesake. I would classify this name as clunky-cute.
Elizabeth (Elsie?) - Elizabeth is a classic with lots of nicknames. It's a heavy name, but nicknames galore: Eliza, Betty, Bette, Lizzie, and even Elsie all help to individualize the wearer.

I love Charlotte and Audrey! Scarlett would be another nice option.

I think you have a lovely list OP; my faves are Penelope (I'd nn Nell), Persephone and Clothilde. But it seems the latter might be tricky in the UK - for those wondering, it's CLO as in Chloe and TEELD as in Mathilde, so no cloth or clot sounds! - so maybe not that.

Audrey - love
Clementine - is ok
Charlotte - a classic but maybe boring ?
Persephone - it's ok but many may not be able to pronounce it? Maybe abit try hard?
Penelope - love - my favourite from your list
Elizabeth - see Charlotte

The others a def no

Audrey - prefer Aubrey
Clementine - love! (NN Clemmie)
Charlotte (Lottie) - prefer Lottie
Persephone (love Percy as a NN) - no! Clothilde - no too clunky / ugly
Penelope (Penny- hmm) No
Dido No

Ida - ok
Elizabeth (Elsie?) ok - prefer Betty /Betsy

TOO

Love Persephone
Clotilde is lovely two.

Would probably avoid Charlotte and Elizabeth - lovely but so many of em

I love Penelope but would nn Nell.

Persephone would be very hard to pull off unless you’re in a vv MC area. Where I live it just couldn’t be done.

I’m a Charlotte and NN ‘Charlie’/Sharles (spelt phonetically)/Chaz/Shaz/Charl. Never Lottie as my parents hate it. Some people do call me ‘Lottie-Lou’ but not frequently.

Op Dido and Percy are dreadful (Dildo and Penis) as is Cloth. Sorry

The rest are fine, Elizabeth being the best.

I love Penelope nn Nell

Not keen on Dido

Clementine would be my first choice, Charlotte my second. Not keen on any of the others on the list.

Audrey - love!
Clementine - love!
Charlotte (Lottie) - boring
Persephone (love Percy as a NN) - beautiful but a bit much. And dislike Percy. I'd go for Sephy.
Clothilde - reminds me of blood clots
Penelope (Penny- hmm) - like
Dido - dildo
Ida - nice but gaining in popularity
Elizabeth (Elsie?) - bit boring but amazing nickname options

Audrey - LIKE

Clementine - NOT KEEN

Charlotte (Lottie) - LIKE

Persephone (love Percy as a NN) - Pretentious

Clothilde - no idea how to pronounce??

Penelope (Penny- hmm) - like but getting popular if that bothers you

Dido - dislike, too close to Dildo (sorry!)

Ida - ok

Elizabeth (Elsie?) - like

Audrey - Absolutely love Audrey! One of my favourite names.

Clementine - Nice but not my favourite. Cece could work as a nickname which I like.

Charlotte (Lottie) - It's way over used and IMO doesn't sound very nice. Lottie is a nice enough nickname though.

Persephone (love Percy as a NN) - Really dislike this name and nickname, sorry.

Clothilde - I've never heard this name before but it sounds like a cleaning product to me...

Penelope (Penny- hmm) - Love Penelope! So many gorgeous nickname options to choose from.

Dido - Doesn't sound right at all.

Ida - Not my style but I still think it's a nice name.

Elizabeth (Elsie?) - Elizabeth is nice but I dislike the nickname Elsie. Eliza or Liza would be nicer IMO.

I absolutely love Clothilde, I've loved it ever since I heard it in a Miss Marple. So, that's my favourite.

I like the rest apart from Elsie as a nickname. Still an old lady name to me.

Audrey - old fashioned but not in a trendy way
Clementine - lovely
Charlotte (Lottie) - lovely
Persephone (love Percy as a NN) - pretentious
Clothilde - not a clue how to pronounce this!
Penelope (Penny- hmm) - cute but maybe too cutesy
Dido - sorry, i just read Dildo
Ida - ok
Elizabeth (Elsie?) - lovely

Audrey - I actually quite like this one. Other names which spring to mind - Camille, Sylvie / Sylvia, Orla, Martha, Aurelia
Clementine - bit twee, but cute for a little girl - not so sure for an adult
Charlotte (Lottie) - bit dull
Persephone (love Percy as a NN) - bit OTT I think, though I like other names with a similar vibe e.g. Ophelia, Ariadne, Athena
Clothilde - nope
Penelope (Penny- hmm) - like Nell as a nn, but Penny is awful and not that keen on the full name, feels a bit stuffy.
Dido - singer / dildo
Ida - like. Ada? Iona? Iris? Una?
Elizabeth (Elsie?) - ok, lots of nn potential. I like Beth.

Audrey - Shakespearean but Audrey Roberts
Clementine - satsuma
Charlotte (Lottie) - fine
Persephone (love Percy as a NN) - not sure
Clothilde - clot
Penelope (Penny- hmm) - fine
Dido - too similar to a wiord with an L in it
Ida - Ida Clough
Elizabeth (Elsie?) - Elsie Tanner. Elsa is nice