If you can think of someone who not only excels in their field, but is also outstandingly superior to all others in it, then you can say that that someone is “in a different league” or “head and shoulders above the rest”. The second expression, in particular, creates a very vivid and immediately comprehensible image.
People who are “in a different league” may even attract attention from the media. If this happens, they can be said to be “in the public eye” or “in the limelight”.
But there is, of course, no guarantee that such media attention will last. While it is often important to specialise in a certain field, it’s usually not a good idea to “put all your eggs in one basket”, meaning to commit all your energy to one area of specialty. This expression is so versatile that it can be applied to many areas of life.
Ultimately, there may be a “sweet spot” – a balance – to be found by specialising in certain areas, but making sure that these specialisms are sufficiently different from one another. By doing so, you can truly “have the best of both worlds” and enjoy the advantages of both approaches.