The alpha variant was the original variant from the UK. Yes, it was in the news, but was usually referred to as the UK variant.I don’t remember any alpha beta gamma variants being reported in the news. Do you?
The beta variant was mostly known as the South African variant, and was also in the news.
The gamma variant was the one which began in Brazil.
Neither the beta nor the gamma variants came to dominate in the US, but all three were in the news.