Hi,
I not only can lists of users tha have liked a specific page, but also users that also have interacted with a page, by either liking a post &/or commenting on a post. These types of users i found are highly more valuable, as they have shown a passion & true interest in the page/niche.. (unlike majority of users that have liked a page are either 'bought' / 'fake' or 'family/friends' that have been begged to like). These users have no value to a page, hence why its a waste targeting them in your own ad campaigns.
I can also extract users based on any graph search combination. Example, people who like 'Arsenal Soccer Team' and has checked in to the 'Emirates Stadium' who live in 'Australia'.
I look forward to hearing back from you!
Cheers,
Nick