A popular missconception is that Gernichora plays like an auto-play deck, however I can recommend using it to get into the game, it plays homogenously and rewards figuring out "the flow of points" and Monsters is the only faction mainly aimed at being able to use the concept of tempo.
In fact Monsters is the faction with the best fleshed out archtypes and all leaders feel different if build correct.
However, unless you want to play a lot before the new expansion, I would recommend waiting a bit, considering cards such as "The Great Oak", a card that somewhat follows Monsters design, are making Scoiatael and other factions a lot more fun and versatile.
The expansion is going to include a lot of new archtypes or at least tools, which can turn other factions similarly interesting.
Given that Burza even directly stated that Monsters are how they want factions to look like (please correct me if I am wrong, however I do remember that from the stream), which means that WILL be addressed in the new expansion for the other factions as well.