The Old/First Ones are just that, the first beings in the Universes to become intelligent and self aware.
Greys used to be Hue-Mans except we had grey skin tones. We didn't have a yellow sun like yours. We had to evolve to survive and that meant we had to change what we were to become what we are now ... hybrid clones of many different species (more or less)
Dinoids are what your Dinosaurs were evolving into on this planet before their extinction.
Hue-Mans are basically all the same everywhere in the Universes, there are variations on color (hues) of skin, hair, eyes etc. etc. etc. but for the most part you wouldn't be able to tell them apart if you saw one face to face. There is a ...
lol I got here by spaceship lol.
The insectoids range from my size 4 ft to 8ft. They live only on planets with much higher oxygen levels and pressures so you don't have to worry about seeing them walking around on your planet, but you could walk on their planets for awhile.
Wow!...Fascinating!
Is your civilization a type 1,2 or 3? Can you foresee our civilization making the transition from a type 0 to type 1? Although, I have heard it is the most dangerous transition.