While there are other plants in the Nepeta genus, like Nepeta mussinii (catmint) and Nepeta faassenii (walk-on-the-wild-side catmint), they don't seem to have the same effect on cats as common catnip. This is likely because Nepeta cataria contains a higher concentration of the active compound, nepetalactone, which is responsible for the euphoric and playful response in cats.
However, it's important to note that not all cats react to catnip, and even those that do can have varying degrees of sensitivity. Some cats may become more playful and affectionate, while others might become lethargic or even aggressive.
Ultimately, the best way to determine which type of catnip your cat prefers is to try different types and see which one they respond to the most.