I was not able to figure out how to extrude an edge in sketch. My fault was I did not read the tool tip help text.
However fusion organized poly tools in an odd way.
Extrude loft etc should be grouped with bridge subdivide ect.
All those command create geometry.
Further extrude should be applied not only to a face but also to an edge and vertex.
In blender e just extrudes geometry no matter what I have selected.