>>42081091. Rec.709, sRGB and DCI-P3 all lean into Yellow/Green right side wayy too much.
2. AdobeRGB is nice but nobody uses it aside from it being used for some prints.
3. NTSC 1953 is effectively better than AdobeRGB, as it covers 7% bigger color space than AdobeRGB, but it is ancient and close to nobody in the world uses it anymore.
4. Rec.2020 aka BT.2020, is currently the best color space (aside from the meme ProPhotoRGB) and right now, on the entire market, there are only 8 monitors from 6 different manufacturers, (EIZO, Samsung, Benq, etc.), as well as only 15 phones on the entire market (and all of them are Sony,) that even have the option to switch to Rec.2020 color space or use Rec.2020 color space. However, Rec.2020 is being pushed into more and more newer monitors and phones and is also being pushed to replace the sRGB and Rec.709 color spaces, as the new default color space for computer monitors and mobile phone screens.
That said, over 98% of all monitors currently on the market, as well as TVs and phones, all have screens that are color calibrated for and display only in sRGB from the factory, as for most phones specifically (especially iPhones), over 99% of them are factory calibrated to sRGB at 99-100% accuracy with a delta rating of 2 or less. Which means, that your work will be 99.99% of the time viewed on an sRGB monitor/screen, further meaning that it makes no sense to spend money on an expensive P3/ARGB/whatever monitor or stress yourself around color spaces and all of the related nonsense, when 99% of your customers will be viewing your work in sRGB anyway, so whether you edit your images/videos in P3,AdobeRGB, Rec.709, it really doesn't matter, as long as whatever you're editing in covers at least 99% of sRGB color space.
So until monitors start using Rec.2020, you literally don't have to care around color spaces, because your work will essentially 100% of the time, aka. ALWAYS, be viewed on an sRGB color space monitor/screen.