I have the phone dock by THMSDRZ on my bedside table but as I have been tidying up my office I wanted to have a similar stand clamped to the edge of my desk and didn't see any designs like this so I made one.
I found the clamp byBKoch00 and mashed the two designs together and works perfectly.
The second plate can be a bit tricky to print as it only has a tiny segment attached to the bed so had to tweak the design as it kept on falling high into the print. I also used glue on the bed to get this to print the last time. It is split up like this so that you don't need supports to print.
There is also two different length screws on the first plate, I needed a short one as my desk has a cable run underneath and the long one caught it so I cut it down you only will need one of these depending on your situation.
Shout if you have any questions