I use all of those mentioned, and more. And, agree completely with Jack that it is important that folks create their own as they see that they are 'reaching' for menus/elsewhere often.
Some other ones that I use frequently (and may be different from the standard keys for those things with default shortcuts) are:
ctrl/cmd-F: Find and Select
ctrl/cmd-minus: adjust: extends (or trims) one or multiple lines/walls to a clicked or virtually drawn line
ctrl/cmd-B: split/break a line/wall at the selected intersection (of clicked or virtually drawn line)
ctrl/cmd-shift-': zoom to selection. I use zoom extents in Eric's list the most often (ctrl-') but sometimes the project is too huge and selecting an area and zooming just it is faster.
I: intersect (walls/lines)
H: hairline / true-weight toggle (Marc's cmd-1)
Shift-I: Info Palette - info on selected elements
shift-E: SEOp palette. (Shift='S'olid, E=Element)
ctrl/cmd-Z followed by ctrl/cmd-Shift-Z (Undo/Redo): selects last created element(s)
ctrl/cmd-shift-O: open selected object in the GDL editor
shift-O: Align 3D Texture > Set Origin
shift-P: Align 3D Texture > Reset
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