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I've been super impressed by my 32c Michelin Power Road Tubeless. 4,000 miles in, no punctures, plenty of life left and surprisingly quick. They come up at 35 on my 25mm internal rims. They started to leak a bit of sealant after 3000 miles but a top up stopped that and they've been fine since.
I've been less impressed with my Conti GP5000 (tubed) on my other bike, really fast wear rate.
Saffronspokes-
I've been super impressed by my 32c Michelin Power Road Tubeless. 4,000 miles in, no punctures, plenty of life left and surprisingly quick. They come up at 35 on my 25mm internal rims.
Fitted these just now to a 25mm internal rim, feel great on the road but didn't count on the fender fitment changing so much! I could swap these Handsome MB ("45mm") guards for some Honjo smooth ones in 41mm (or even 35mm?). Much faff.
Tubeless setup was a piece of cake. No tools needed and held pressure even before adding sealant.
Yemble
GP5000 still the go to for a "fast" tubeless 700x32 (or 33)? I've been really happy with the Challenge SB in 36 but now on a wide rim they measure out to 40mm and I'm ready to try something different - and the SB only has a 30c, as does the Corsa Control. Typical ride is 90-95% paved, rest light gravel or dry hardpack depending on season.
Other 32s:
Pirelli Cinturato or P7 Sport
Michelin Power Road
Hutchinson Sector
Schwalbe Pro One
Michelin or Schwalbe seem like the next best option (or maybe just best if the Contis are as difficult to mount as I've heard).
Edit: have just discovered a secret menu for Challenge that does in fact have a 700x33 option so that's in the mix.