The keyboard should be chosen according to tactile sensations. That is, take and click, if it is pleasant to the touch, you can take it, if not, then it’s not worth it.
The mechanism is already secondary, it can be membrane and it is convenient to work on it, or it can be mechanical and feel discomfort. It is also desirable to take a full-length one, with a normal key size.
More significant is the correct position of the hands and the position of the hand. Since the arms and hands themselves get tired more during prolonged work at the keyboard than fingers. It is also desirable to have a chair with armrests so that your elbows do not have fun in the air when you work, and be sure to do a warm-up for your fingers once an hour.