In fact, there's really only Ethereum and STEEM that do it. (And Ripple, but we're not talking about Ripple because it's the banksters bitcoin, and it's centralised, so basically it can fuck right off)

Ripple is not doing 1 million transactions per day on their ledger. The chart that shows up on BitInfoCharts appears to be exchange trades, not transactions recorded on the Ripple Ledger.

If you combine the Ledger transactions (Payments and Trades) on Ripple it's doing about 150k transactions per day.

Note the distinction between Exchange Trade Volume and XRP Ledger Trade Volume on this page. When you count Exchange Trades it adds up close to the BitInfoCharts numbers, but when you count the 'Ledger' transactions, it doesn't match BitInfoCharts.

I know this is not central to your post, but I really think we need to throw cold water on the myth that Ripple is being widely used!