These almost surely exist on Digikey. Essentra Components or Keystone Electronics would be the manufacturers, as they are the two biggest standoff manufacturers.
Yes, they might take a while to find. But if you use the Digikey search tool, and any measurements you can get from an actual board (like the hole size, and the spacings), you can narrow it down. Then you look at the drawings once you've found something you think is close, to make sure it's 100% correct.
I've gone through this process before, to find other standoffs. They almost certainly exist, it just takes work to find them. Searching those companies' websites directly can also help find things faster sometimes. I've done both.
That one almost looks like a 2-piece standoff, with a snap-in base, and then a screw-on second level? Not sure from the pics.
Here's a search result page of just board supports, if you want to start scrolling. Select Keystone as the manufacturer, then 'Apply All'