Liberace - "I wish my brother George was here." Only kind of joking. He actually was a great pianist early on and won some competitions but later on went for showmanship over quality. But people loved him for that showmanship.
Great classical pianists
Alexandra Dovgan is the pianist of her generation.
In the last century there was Richter. Today Trifonov. Now a new phenom. What is it in the Russian water that produces such giants of the keyboard?
We enjoy all great pianists. Rubinstein, Pollini, Argerich, Backhaus, Kempf, Michelangeli, Schnabel, Pogorelic, Gilels. Please add your favorite to this embarrassment of pianistic riches. But there is primus inter pares.