Freestanding VESA stands aren't very popular. Most people want the desk clamp. There's also bolt through.
I think ATDEC has some nice stands which would be at home with the Studio Display. Here is a bolt through model.
Here's another real nice one with cable management. They offer a variety of mount options.
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www.atdec.com
Here's a freestanding single monitor steel (silver) stand.
Mount your monitor on a desk stand, with tilt, pivot and height adjustments
www.startech.com
Here's another. If you can actually find it.
Rail Stand is designed by free standing type (no rail, one layer) and the MAX loading could be 12 Kgs (26.4 labs). Modular and multi-screen design saves space and assembles quickly. It can be adjusted and transformed according to the needs of the environment, which is space beautification...
www.easternglobal.com.tw