considered here. I guess general opinion is that they are legit..
But they invite you to visit their mining rigs. So yes, they are legit. Profitable? That's another story, but they do mine.
Kindly note, though that they do invite to visit their mining rigs, that this is not the same as being legit (!)
I have seen a few posts from people saying they were thinking about paying them a visit, but never actually saw a comment of one who actually had done so
Some of those from OP's list owned offices and you could go there and talk to their employees. They had live chats, skypes, phone numbers. Some even had mining farms set up to look legit, made photos and videos of these mines and it was all for show.
A company with a physical location can't be called legit purely because of that.
Owning mining equipment doesn't make you a legit cloud mining company!
All true.
But even being a legit cloud mining company does not mean you will never be scammed.
Wrong business decisions, hacks, inside jobs, etc. can happen.