I’ve known a few masons, worked along side them. No issues with them, but they weren’t way up in the hierarchy either.
Seems that free masonry gravitates to the electric power industry.
I was invited to join twice. Turned it down both times. I went to a funeral service where one had passed. There were some unique rituals performed, but nothing that struck me as satanic.
My reason at the time for not joining was that my manager was a Mason and I didn’t want to give the appearance that I was sucking up to the boss.
I read the book my dad had that had the oaths and such in it. Non members were never supposed to see it. I don't remember them now, but I do know that the initiates were not told ahead of time what they would be swearing to. Obedience and faithfulness and such, to things not necessarily God's way. How many people can stop in the middle of a ceremony and say.... "Oops, sorry, not swearing to that".
I was encouraged to join DeMolay first and then become a Mason by a dear, dear relative, but it didn't pan out. My dad was very much against any sort of fraternities/organizations/etc, so I did not have a bent towards them (despite being a Democrat, dad also didn't care for labor union poobahs above the guys actually working on shop floors).
This relative had become a Mason in the military, probably because a number of his fellow officers were such. He had been brought up aa a Protestant Evangelical but by the time I remember him, he was occasionally openly dismissive of Jesus Christ.
He was adamant that Freemasonry would open doors for me like nothing else in the world. Gotta be careful what doors you open.
I've known quite a few of them as I once worked as a mason tender.