This works for me TOGUARD Backup Camera for Cars 7"... https://www.amazon.com/dp/B07DGS11CM?ref=ppx_pop_mob_ap_share

I picked up this one a few days ago.

https://www.amazon.com/dp/B07DGS11CM/

Not necessarily for the cameras to be recording, but more for the improved rear view when backing since I've got a cargo rack & molle panels restricting my rearward field of view.

I'm planning to wire the power to the camera into the reverse lights so it'll kick on when I'm in reverse.

I used this to tap into the power for the OEM mirror instead of running separate wires under the dash: https://www.amazon.com/dp/B07R7JGCL1/

I would also add the Toguard one to your list as I've seen that one mentioned on here before. Personally tho, I have zero experience with any of the strap on mirror dashcam/reverse cams. No idea how the work. Vantrue will probably give you better customer support if anything goes wrong, whereas the off brands usually have very little to none.

On the other hand, since the price difference is substantial you could order either one and if you don't like it Amazon has a great return policy. Just an idea.