I don't have ten, but I do like https://mediabiasfactcheck.com to help me weed out Alt-Left , Alt-Right and also "wacko" CT-oriented "news sources", open-source bellingcat.com (regarding mobbed-up KGB-boy Vladimir Putin's shennanigans around the world during the last 5 years or so, which in turn kinda sheds a light on KGB mentality and goals, imho), and the Mary Ferrell Foundation, of course (I really should renew my membership).
Oh yeah, and I should say that I've found that Bill Simpich's State Secret is so well "sourced" that it's a pretty darn good research too, too. I also like John Newman's Oswald and the CIA.
That's all I can think of for now. I'll probably add some more, later.
What about you?
What are YOUR "Top Ten"
Hmmm?
-- Toomby
PS Did I mention the Education Forum?
PPS Did I mention Google Search, you know, using it the way I suggested to Paul Brancato a year or so ago? You know, using quotation marks, "ctrl" + "F", etc.