REX Shares has filed for XRP, Solana, and Dogecoin ETFs, expanding crypto investment options.With a pro-crypto SEC leadership, XRP and Solana ETFs are likely to see approval, marking a pivotal moment for mainstream crypto finance.Analysts predict a 92% likelihood of a Solana ETF being approved, while Dogecoin ETFs remain a distant possibility.The surge in ETF filings reflects a broader push to expand crypto investment opportunities.