Which stock company do you think is the GOAT (Greatest Of All Time)? You don't have to consider just performance, it can be based on their numbers, products, needs or future potential.
For me, it's Monster $MNST+0.0% in terms of performance, Berkshire Hathaway in terms of self-popularity, and Merck $MRK/-0.7% Pfizer $PFI-0.3% in terms of human need and utility as some of the oldest healthcare companies.
For me as an investor, Berkshire is the GOAT and I stand by that. A complex company with high diversification, perfect management, predictability, stability, tons of cash and a long history.