The complete question is how to achieve the ideal seated posture and/or maintain it. I like the idea of height adjustable desks for the simple reason that it c

The complete question is how to achieve the ideal seated posture and/or maintain it. I like the idea of height adjustable desks for the simple reason that it can be lowered/raised to the exact height that's correct for your build. For ideal posture, your thighs should be parallel to the ground, your back should be straight, and your arms slightly lower than parallel to the ground when you're typing. Ideally your monitor should be at eye level to avoid getting "tech neck" which all suggest having height adjustable monitors and desks, and your chair able to adjust height and offer optimal back support. It's a really long way of saying that even if there is an ideal, perfect chair for you there's no way that can be a universal recommendation.