These will also be good or atleast close for anyone doing any E33s and E44s.
Kato or Bachmann GG1 pantographs are the closest to what the E33's used. I believe the Bachmann panto might actually be sprung.
Dapol out of the UK offered a set of 2 pantographs as spare parts upwards of 10 years ago with one of the pantographs being a close match the ones used on E44's. Like a lot of other N scale pantographs, these two were non sprung as well. These seem to be close to being unattainable today. There's a set on eBay for close to $30.
https://www.osbornsmodels.com/nspare3-dapol-pantographs-2-13992-p.aspThe Kato ACS-64 pantographs which can be had for $10 with other roof parts included, and are probably the best bet for an AEM-7 with the later style pantographs. Not sprung or operating of course.
And finally, Tomix has a huge assortment of pantographs beyond those posted at the start this thread, and for much less too, not with standing shipping. I've got this link filtered to just current in stock. Kato also has their Japanese prototype pantographs for similar prices.
https://1999.co.jp/eng/list/590/0/1?word=pantograph&sold=1