There are a few- Henry Makow, Maybe Norman Finklestein, Gilead Atzmon,Mordeccai Vannunu and Ron Unz definately fits in this group. Not sure about Brother Nathaniel and a few others....David Weiss is great for flat earth but I'm still wary of him.
Many current researchers curious about Flat Earth simply go to GooCIAgle and its derivatives. They somehow still don't understand the level of control using algorithms to deliberately mislead. Many or most of the websites with information on FE are now controlled opposition.
One either has to have researched certain topics years age, or use Yandex (which is also somewhat compromised) to find facts uncontaminated by two types of controlled opposition on this topic.
One is the typical type, in which 99% of the info is legit and the 1% is lying or new age.
The other type is intended to discredit FE theory by providing some legit info, but weaving in sheer stupidity intended to discredit FE.