Yeah - if you go to your profile and click on "following" you can see it. I believe you can also see other's lists who they follow - here's mine: https://kbin.social/u/EnglishMobster/following
Part of who I follow are people I'd normally follow on Mastodon; another part are people who frequently use hashtags that I'm interested in (like #ModelTrains) and I want to see their stuff in magazines like @modeltrains.
Note that if you follow a Kbin user, I believe you'll see posts they make across the fediverse in your "subscriptions" feed, even if you aren't subscribed to that magazine. I'm not sure if I'm a fan of that, but I suppose it makes sense. (People you follow who use Mastodon only seem to pop up in the "microblog" section.)