Which currencies does Coinbase support?

Could you please clarify for me the range of currencies that Coinbase supports? As a cryptocurrency user, I'm always looking to diversify my portfolio and ensure that I have access to a wide variety of options. Coinbase is a popular platform, so I'm curious to know if it offers support for some of the more niche currencies, or if it primarily focuses on the larger, more well-known ones. Thank you for your time.