While we are currently still trying to make the cloning process foolproof, we've advanced enough that cloning is seeing practical use in laboratory research in diseases.
Rats are, already, having DNA adjusted for disease research reasons, however, that's still a bit too expensive to be very widespread and is also not Reproductive cloning.
In early 2018, scientists in China produced two monkeys using the same method that created Dolly. Prior to these two, named Zhong Zhong and Hua Hua, monkeys had only been cloned by splitting fertilized embryo into up to four different eggs.
The intent of their creation was to, theoretically, create a uniform population of monkeys that could be used for the further development of treatments for Parkinson’s, Alzheimer’s, and various forms of Cancer. We aren’t quite there yet, but with the successful cloning of hong Zhong and Hua Hua, we appear to be on the right track.
Other scientists are looking to genetically engineering sheep to produce milk that helps prevent blood clots.
Elsewhere, Scientists are attempting to revive extinct animals from fossils or other preserved sourced (ex. the baby mammal that was preserved in ice). All that is required is:
As one can imagine, currently there isn't much forward progress being made.