If you click on the “more” button under a comment or link there will be an activity tab. In this tab you can see everyone who has boosted, favourited or reduced the post. I’m not sure if this a
Is a good feature but it’s interesting to see when someone decides to reduce all of your content for no reason.
Lurking means reading without contributing. Perhaps voting could be encompassed in that on Reddit, but here on the Fediverse a vote is a public statement. It’s akin to posting “This!”