I sort of think of left-handed people.
I am right handed, but overused it and switched to a left-handed mouse.
There are basically infinity right-handed mice, but basically zero left-handed mice, most of which are hedged ambidextrous mice.
so looking at office chairs and standing desks and all kinds of ergonomics oriented towards healthy sitting, it seems amazing that there isn't more competition for people who sit more than anyone.
I felt comfortable with "neutral" mouses that aren't shaped right or left that I could use either with right or left hand
I use dual mice for variety sake.
The Logitech G300s has been solid as a lefty. They used to be cheap enough that replacing them every couple of years (depending on usage) was feasible, but I'm not sure if the market has driven up prices since then.
Sounds like a nice application for 3D printing tbh. Take the electronics from a regular mouse and fit into a left-handed housing with a range of shapes/sizes etc available! Call it "second hand"
Elecom makes a nice left handed trackball. Employers don't often provide ThinkPads, so I usually use a standard mouse on the left side without swapping the buttons.
I switched to an Apple Trackpad and it basically cured my wrist issues that I was experiencing.
Most left handed people I know (me included), use the mouse with the right hand. Might be a bubble though, but I never thought to get a left handed mouse, or left handed scissors or most left handed things. There's a few things that really don't work (I play my drumkit with hands reversed), but most things are fine.