Brands for flat shoes / sandals

[flipflopfly]

Looking for some recommendations of brands or shops - online as I'm overseas - that do great flat shoes and / or sandals.

I live in a ridiculously hot place so sadly loafers don't really work, nor boots and I have a large collection of sneakers and birkies already. I'd like something a bit more 'elegant' for the clothes I want it to go with. I'm thinking more slingbacks or ballet, sandals possibly more chunky than strappy. I'm looking specifically for navy or midnight blue. Sorry, I know I'm being fussy.

I've looked at Pretty Ballerina (loved the tyra in teal but the colour won't work with all the options I'd like to pair it with),
Rothy's/ Allbirds/Vivaia - I like the idea of comfort, just not sure how fabricy the shoes would look close up? Any views?
Baredfootwear don't have anything in navy although I love their comfort. Nor do Air and Grace.
The usual Outlet, Netaporter, Yoox haven't shown up anything I loved.

Any loved and tried/tested brands out there for flats? Thanks!

Tieks are expensive but have navy. Mine have lasted for years so the price balances out.
Django and Juliette are and Australian brand: make coloured and comfortable shoes, all styles.
Strongly recommend Wonders. Look at the Australian/SE Asian sites got sandals. Step Ahead in Australia stock them.

I tried Allbirds but they don’t do half sizes and sizing up/down did not work for me.

I like air and grace sandals. Boden is great for flats that work for the office.

Thank you @HappyDaze23 love my Air and Grace but sadly none in a blue/navy colour which is actually proving hard across all the sites.

And @learieonthewildmoor interesting about All birds - they come up often in reviews along with rothy's but noone I know actually seems to own a pair!
Tieks I do like the look at but not sure about the green soles - is it as obvious in real life as on the web site?
And thanks for Wonders, great site I'd not come across before. So I'll have a long scroll through,

I don’t really notice the sole when I’m wearing them. I find the plain leather ones most comfortable. They don’t do half sizes but sizing down gives me a good fit.

I like moshulu, though my faves are no longer sold 😥

Not the style I was looking for but live those slippers! Definitely shoes/slippers that make you smile

ToniPons. 100%