Large investors are quietly buying up certain alternative cryptocurrencies, signaling potential for significant growth.Three altcoins that are attracting attention are XYZ, Ethereum (ETH), and Shiba Inu (SHIB).XYZ is leading the charge in the meme coin arena and is expected to deliver impressive gains.Ethereum (ETH) and Shiba Inu (SHIB) also show potential for growth in the crypto market.