I bought a redragon as my first mechanical keyboard. For the price, it was a great introduction.
FTMP, IDK about your more technical questions because there are many models & some are closer to custom specs than others,
One I bought later is not even mechanical but a uniform profile, flat (like laptop) key.
Today, I don't consider the outemu switches to be that great. They are totally service-able and anyone but an enthusiast wouldn't mind. Still, that's just the board I have & there are many more options. Mine was pretty inexpensive.