After playing this game for over 5 years. It's the only game I play on my phone... I'm really interested in where I stand amongst other players. I mailed them and they said Game Center doesn't provide much room for those big numbers.
So my idea is to make an online website with leaderboard statistics.
I would recommend joining the Discord community linked on the side. There is of course a bias toward players with a higher Earnings Bonus there, but they do have a leaderboard already, and it likely would have more data than the website you make.