Zeo's morphers kind of magically appeared, In Space they never worried about them to begin with, Lightspeed were public anyway, Dino Thunder just appeared, and the RPM rangers had too many other problems to worry about at the time.

I don't quite remember how Turbo got around it, and I don't recall whether or not the Galaxy rangers were publicly known.
I don't think there were any other wrist morphers.

Lost Galaxy sort of just appeared at random for the most part.

Turbo magically appeared. They twisted/flicked their wrist like they did in Zeo and pulled their key out of their pocket.

And Zeo disappeared just as magically as they appeared. "Zeo? No.. I don't know what you're talking about." "The morphers.. the one you used at the start of the movie!" ".. No, no. Always used keys. Yup." "But!" "Vroooom!"

:lolol

No. RPM was pretty public. They auditioned for rangers. And had kids meet them. They were a military unit basically.

How do you Power Rangers would've turned out it if Saban started a year earlier and adapted Jetman? What would it be called? What would MMPR's zords be used for?

Might have still been called MMPR, as nothing about that title really relates to Dinosaurs/Ice Age creatures. I don't know if it would have done as well, since I honestly feel the interest in a sixth ranger pulls a lot of viewers in, which if memory serves I believe started with Zyuranger?

Granted, I've heard awesome things about Jetman, but I have to admit my interest in a PR/Sentai season starts to dwindle if I'm not enticed with a sixth ranger, who comes with a slightly altered way to his/her powers but are still similar enough that they're not breaking the theme.

Actually the very first 6th ranger was in Maskman. But he was a prototype and only existed for like one episode. And coincidentally he was green as well.

Which is why he's not considered a 6th, but an "Other", as he was not part of the team and only had one appearance.