Yeah there is, but maybe its not regulated as well.
Maybe they were rented/bought by scammers that needed an airplane in their scam.
There are aircraft registries and commercial databases, but the picture is complicated somewhat by these aircraft having been deregistered for some time and the last known operator having returned them off lease even before that.
Plus most of the time aircraft are worth actual money so people have an incentive not to let them rot. Of course, that's not always true.