Winter's altcoin season is expected to witness a surge in lesser-known digital currencies.The top three cryptocurrencies that could dominate the season are XYZ, Sui (SUI), and Pepe (PEPE).XYZ is a sports-driven meme token with potential high returns and upcoming listings on major platforms.Sui focuses on usability and scalability, while Pepe pays tribute to the famous Pepe the Frog meme.