Hi Plantlovingnana,
to garden.org!
What a happy, healthy and beautiful
Wax Plant (Hoya carnosa) 
Yes, there are different cultivars of H. carnosa and you can view them on this page of our database:
https://garden.org/plants/sear...
There are also many other species of Hoya besides carnosa, some with very attractive leaves, some that have tiny flowers and others that have very large flowers. Many Hoya blooms are extremely fragrant, usually in the early morning, late evening and night time hours. You can view all of the different species of Hoya on these database pages:
https://garden.org/plants/sear...
