Multiple Vintage Switch/Keyboard Identification

[Loxus]

Hello all, new to the forum. I recently scored these 8 keyboards for $100 total from a vintage computer hoarder, and I'm having trouble finding some of the keyboard models/switches online.

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The ones I know:
Packard Bell 5339s (BTC Dome w/ Slider)
Mitsumi KKR-E99AC (Mitsumi Hybrid)
Apple M0110 (Alps SKCC Tall Cream)
Focus FK-2001 (Alps SKCM White)
Dell AT101W (Alps SKCM Black)

There are 3 keyboards out of the 8 that are more or less mysterious.

The first one is a Fujitsu/ICL 9535. It looks sort of like Fujitsu Peerless, but the stem design looks a bit different from what I've seen on other Peerless boards.

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The second one is (probably?) an Oak Switch Systems 5-64995-010. I haven't been able to find this keyboard online, and the switches look different than anything I've seen online for Oak Systems boards.

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The third one is by far the most mysterious. No branding anywhere, front or back. I opened it up and saw a "Kuotiang" label, but no model number.

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Any help on identifying these would be much appreciated! (sorry for the text wall)

[xxhellfirexx]

https://wiki.themk.org/index.php/Fujitsu_Peerless

https://wiki.themk.org/index.php/Oak_Fu ... l_Membrane

https://wiki.themk.org/index.php/USw_LZQW01

[Loxus]

thanks for this! i can't find anything else out about those USw switches so i assume they're probably some rare clone of some kind. As it turns out, those fujitsu switches are actually a spring over membrane. They're completely linear, not like my clicky peerless board.