Well, when it comes to your question...all in the eye of beholder.
All cats are inherently majestic and regal, arent they? And all are beautiful in widely varying ways.
It sounds like you are wanting a "showy-type" cat... one that really stands out from most.
Certainly nothing wrong with seeking qualities you want ( or dont want) and narrowing it down to a specific breed.
Most of us have persians here... and that is why we have them.
The looks are just one facet of any pet, though. Personality traits and grooming requirments are equally important to be a succcessful match
With their sweet personalities and great beauty....persian cats are the most popular purbebred cat today:
But as mentioned.. they are "very" high-maintenence. A lot of people find this out after the fact, unfortunately.
If big, long-haired cats appeal to you, the Maine Coon and Ragdolls are both beautiful and extra-large - can reach up to 20 pounds, and are less heavy maintenence ( though combing is still needed)
The sleek elegance of some short haired breeds is stunning on the other hand.. and easier care.
The Russian Blue, The Oriental, Siamese, British and American Shorhair.. This list is endless really.
And each breed has specific traits in personality that may or may not be for you. Some cats are very vocal and active, others quiet and low key. Important considerations.
So, that's where the advice to research the cat breeds is bang on in finding the ideal kitty companion best suited for your tastes and lifestyle.
A rescue cat is a fabulous idea too. I've fallen in love with so many kitties that were not only drop-dead gorgeous, but in dire need of a home too.
A win-win situation to go this route..