I watch Palace Confidential; it's the Daily Mail's Royal show, and seems to stick to the same editorial guidelines as the newspaper (i.e. stricter than general YouTube channels).
They are clear in their discussion about what is fact and what is speculation. I also like that they give a decent amount of time to the work that the Duchess of Edinburgh does.
It's the only one I watch regularly.
I watched the first couple of episodes of Royals Uncensored when Jo Elvin moved from Palace Confidential to host it, because I thought she was a good host.
It's a different set-up, with guests, but also I think a difference in editorial guidelines - it seemed more sensationalised to me, with content that I don't think would have been allowed in PC, and I stopped watching half way through.
Tom Sykes - I've watched a single 10 minute update video once. It was OK. I got his free Substack emails for about 6 months to see what he said but stopped when they were flooding my inbox and he suggested that RAVEC had some say in IPP status.
Robert Jobson I've seen commenting a couple of times on the Telegraph's Daily T royal podcast - I've just signed up to his emails to see what he says.
Mark Dolan I haven't seen.
Kinsey Schofield I've watched a couple with Scott Rouse (Behaviour Panel guy) - but mainly because I was watching him. She waffles.
I did watch Shauna (Vintage Read) a few times a while ago - before she started hosting Lownie regularly. She was fine then, but I don't know what she is like now.
She was being very supportive of Charles Spencer (and virulently anti KCIII) on Twitter just after Swan Song was published. I asked a few questions and pointed out a couple of facts and managed to get myself blocked (a first anywhere!).