Most of these are IPS and struggle reaching contrast ratios of 700:1 and black levels darker than noon. Some of the LG ones barely manage 500:1 in sRGB mode…
All 3 have been VA to be fair. I do wonder if have missed a trick with IPS but have been lead to believe VA has the speed (and HDR as a plus)? that is kind of the point though I suppose, buying a "HDR ready screen" - it's been a real pain for a few years now from what I have seen >_<
Most decent IPS panels I’ve seen in the past several years have around 1000:1 contrast which still isn’t amazing, but better. Some manage to push that a little further.