To understand the key players in the US fintech startups/digital challenger bank market, including Chime, Aspiration, Varo, MoneyLion, Stash, RobinHood, BankMobile, Marcus, Revolut, and SoFi Money. For each player, their total user numbers, user growth over the last 12 months, total assets under management, loans originated, and other performance metrics which indicate their scale and reach are desired.