Chairs and workbenches are not independent variables.
+1
The chair or stool should fit with your work space and the equipment you will be using.
You might need one chair for your desk that works with your computer, keyboard/mouse, and monitor.
You might need or want a different chair to work with your test equipment bench, or you might prefer to stand when using test equipment. My TE bench has no chair.
You might need or want a different chair or stool for your work bench. I use the stool chair below at my work bench when using a microscope. The stool chair puts my neck, head, and eyes at the right height to view into a microscope when the scope sits on the work bench where I solder. It has a ring foot rest which keeps my feet, knees, and back reasonably comfortable and supported. Like some of the other posters I have removed (simply unbolted) the arm rests - this allows me to get closer to the bench and allows my knees to fit under the bench top. This particular stool chair has some useful adjustments, especially the overall height and the ring foot rest height. It's not the least expensive or the most expensive - you might be able to find it on Amazon, from the manufacturer, or other places.
OFM ESS Collection Mid Back Mesh Chair, Drafting Stool
26.77"D x 28.15"W x 41.5"H
This multi-purpose chair features a 275 lb weight capacity, measures 26.77" D x 28.15" W x 41.9 - 50.4" H with a seat height of 25.30 - 33.85" H
The chances of this particular stool/chair working for you or anyone in particular is probably medium to small as each workspace situation (floor to bench height to equipment height plus your height) is likely to be different. So it might be good to start by first determining the heights you want your head and hands to be relative to the bench/desk height and the height of the equipment you will be viewing and/or operating. Having said all that, this particular stool chair works great with my particular microscope. The microscope allows me to see what I'm doing with a zillion percent improved vision (vs no microscope) and the ability to sit comfortably for extended periods of time on the stool chair has made my soldering MUCH more precise, effective, and enjoyable.
EDIT: I removed the wheeled casters on the bottom of the chair and replaced them with stationary casters (regular feet). Rolling around for some types of work might be useful but for microscope viewing and especially for soldering it is much preferred to remain seated in a highly stable and stationary location. Swiveling can be useful but unwanted rolling not so much.