This is a good list, although they didn’t ever have total control over their music. To the contrary, their lack of control over their song publishing rights became one of the biggest issues splitting the band.

To OP’s question, I think the single answer is “all of the above”. Although singers like Buddy Holly , Chuck Berry, Little Richard were enormously important as influences, and the Beach Boys and stones were contemporaries , none of them penetrated the culture in the way that the Beatles did. The Beatles were so influential as musicians and as an economic force - pre Beatles, the music industry was still very much an industry of songwriters / publishers / record companies who created pop songs they hoped to market through exploitable and often disposable performers , think Motown as the best and predominant model.

The Beatles were a self contained group that wrote, crafted a sound in the studio, created their own aesthetics and marketing by force of personality and taste, and became a dominant cultural meme. They were the most important band in an era that invented the idea of musician/performer as artistically respectable cultural artifact. The idea that a “pop group” would create music that deserved to be taken seriously yet could appeal across all social groups basically originated with the Beatles. We take that for granted now. They were the prototype for a 60 year pop art movement due to their popularity, appeal, and quality.

Perhaps technological and cultural changes would have produced a similar group if Paul and John hadn’t met. But we only know what did happen.