Actually, the word "best" cannot be easily applied to any lens. It has different focal lengths, different uses, different production difficulties, and of course, different prices.
The Canon wide-angle zoom head currently on sale is the 11-24f4, which costs more than 18,000, followed by the newly released 16-35f2.8 third generation, which costs more than 14,000. There are also some fixed focus ultra-wide, tilt-shift lenses, etc. , are relatively expensive. Can you say which one is best?
Whatever the subject matter you are shooting requires is the best, that is to say, whatever suits you is the best.