I have a couple of thoughts:
Ionic is probably the most mature toolkit. However, it has a big problem being that it is based on Angular 1, which is being discontinued this year. Ionic 2 is brand new but isn't very mature and doesn't perform great at this time. It's also built on Angular 2 which is still very buggy and, in my opinion, even more difficult to learn/use than Angular 1.
React Native isn't a hybrid mobile app development framework at all. The clue is in the name. It's a "native" framework. Hybrid mobile apps are interested in substituting native technology with open web technology. They are a transitional form of app we build while we are waiting for the last few important pieces of open web tech needed to build installable web apps. React Native doesn't really solve the problems that hybrid mobile apps are intended to solve.
Meteor has been around for a while, so is probably fairly mature, but I'm not sure it's really doing anything special to solve the "mobile hybrid app" problem. You can build a hybrid mobile app with it just like any modern JS framework, but I don't know that out of the box or with any particular addon, it explicitly supports hybrid application development.
Someone below mentions Xamarin...but again, that is not a hybrid mobile app framework. It isn't built on open web technology.