I have a 3 Diopter 1.75x and am suddenly struggling a bit. By the way, the most common lenses are 3 diopter, 5 diopter and 8 diopter which translates to magnification of 1.75x, 2.25x and 3x.
I would probably opt for the 5 diopter (2.25x) as that is roughly twice as much magnification as I have been working with. I found an outfit that sells one with 3, 5 and 8 diopter interchangeable lenses. https://bolioptics.com/smd-led-3d-5d-8d-led-clamp-magnifier-mg16304110/ I am dwelling on it for a bit but that looks interesting to me.