There doesn't seem to be anything special about the devices - I see you only have 1 gamepad (which is considered by mame2000), but there are also a few keyboard and mice attached. Barring any permission problems (unlikely), I don't see why RetroArch excludes them - might be something to do with the core ?
Can you try running with Mame2003 or other RetroArch core (FBAlpha) to see if this changes anything ?
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