Some people who tend to try to stick to what's verifiable are:
John Greenwald - Specializes in FOIA, sometimes over-focuses on probably irrelevant details but is evolving.
Mick West - A skeptic, one of the few people who has attempted any serious public analysis of the Navy videos, seems reasonably open minded though biased toward the most ordinary possible explanations even of phenomena that clearly deviate substantially from the ordinary.
Luis Elizondo - Certainly worth listening to, though opinions vary greatly on his credibility.
Tim McMillan - The author of the original post. Looks promising, especially if most of his claims here turn out to be accurate.
I can recommend a fictional book "Sekret Machines" by the former lead of Blink 182 who has used his fame and lifelong passion for the phenomenon to create a media company espousing a more gentle introduction to the subject, while still providing some sobering and fascinating context on the phenomenon. The flashbacks are allegedly historical fiction, one of which was referenced in this popular mechanics article (when a UFO floated over Malstrom AFB and took all the ICBM's offline). It's also just a really good read. This same company hired Elizondo and a number of other "in-the-know" advisors, and caused the current UFO media hype cycle by releasing the Nimitz tape to the NYT in 2017.
He doesn’t speculate or fill in gaps. He is and writes like an historian, however, so get ready for some dry reading.