Hi Andrew!
The dust brush, crevice tool, and upholstery nozzle with slider brush are all correct for your Electro-Hygiene, as is the suction adapter with the 3 tabs that I mentioned before. Not sure about the other 2 parts in your picture. The one on the right looks like some sort of cap but haven't seen anything like it and don't know what it's use would be. Hope the wands, floor brush, sprayer, and hand vac parts turn up for you eventually.
Jeff