Over 70 ETF applications are pending approval at the Securities and Exchange Commission in the US.Bloomberg's expert, Eric Balchunas, predicts that many ETFs could be approved this summer.Chances of XRP, DOGE, LTC, and SOL ETFs getting approved vary from 78% to as low as 24% by the end of the year or July 31.Ripple leads with the most ETF applications, but they are currently futures-based, not spot.