All the new kind of arches that you can get with the new version of Shapes 1, more info and download: https://www.arakne.es/en/inkscape-shapes-new-version-compatible-with-inkscape-1-2/
This new version of Shapes, the python extension for inkscape add three new shapes created from the coordinates of the selected objects bounding boxes. Those shapes are Pillow square, pillow rombus and rect spiral. More info and download from https://www.arakne.es/en/inkscape-1-0-shapes-extension-new-version/