Bankable slot machines

So i just read Frank Scoblete's "Slots Conquest". But it's eight years old now, and the machines he describes seem to be hard  to find. Does anybody know where to find a list of the current bankable slot machines? I googled with no luck. Thanks for all replies.

Most, if not all of them, are gone. And if any do exist it is very unlikely that such information would be shared on a public forum.

There are some new bankable games but they are not as lucrative as the old ones.