Views - List of content that user (ID from URL) voted on I want to make a list on every profile page of content that the user voted on.

I've yet only managed to show the current logged in user's votes, not the user from the profile page.

In other words, I need to pass the User ID from Contextual filters to the Filter criteria with VotingAPI.

I tried with the filter Votes: User, but I wasn't able to set Is one of: % as the username, which would've solved my problem.
Contextual filters by definition should already filter your result set on the field for an entity you choose based on the value of the URL.

Set up the contextual filter to filter on Votes: User and make sure you have no other filters or relationships that restrict your result for the logged in user.