Have you seen the website:
Comparatif : TV Full HD, UHD/4K : les téléviseurs LCD, LED, Oled, Plasma ?
TCL aren't sold here in the UK for some reason. But they reviewed a couple of TCL TVs, not the P series though.
If I am being honest with you, I would say you perhaps are placing too much importance on having a CMS system, there are many aspects to consider when purchasing a TV and that is a very minor one. If you look at the reviews on this website of the Sony XE90 and XE93 which are very good TVs but lack a CMS you'll see they mention that Sonys usually have very accurate colour as it is, so usually as calibrators, they still find they can get very good results. They have calibration of greyscale, just not colour.
55" and you open up to OLEDs like the B6 and C6 from last year if you still find one, they have CMS and will be good with HDR, although not as bright as the Sony's for HDR. This years C7 and B7 OLEDs are still quite expensive, but they should drop in price and should be close to prices we saw on the B6 and C6 not so long ago, circa £1500. They all have good CMS with exceptional (best in class) colour reproduction.
There is also last years XD93 Sony with no CMS if you can find a good price on that at 55".
At 58" you might be able to find the Panasonic DX902 which is a very exceptional TV for colour reproduction and HDR also. It has a nice CMS system.
Panasonic and Sony's other TVs at 55 or lower don't have HDR support worth really considering.
At lower price points Samsung had their KS range of TVs that also had a CMS but they are 2016 models and hard to find. See if you can still find any of them for a good price. KS7000/7500/8000/9000 here in Europe. These (especially KS7000) was the best bang for buck HDR tv's of 2016. They are mid range but the minimum I usually would recommend to people if they wanted decent HDR.
edit* I forgot to mention Philips models. The 901F OLED is another 2016 model, it actually was released later than others so you might find some knocking around at a good price. Philips have a CMS but its only 2 point, not 10 point like other makes. It still gets very good reviews. Particularly with motion vs other OLEDs.