As part of adding cut-out miniature standups to 3DVTT, I’ve made their thumbnails cut-out too. When you’re in the screen where you select a mini to add to the tabletop, it shows the cut-out shape, if you set one up when adding the miniature to your collection.
The cut-out miniatures feature is still a work in progress.
The images used for the miniatures are from Robert E. Howard’s Tabletop RPG Conan: Adventures in an Age Undreamed Of, from Modiphius Entertainment.