Try Quests to earn cryptoStablecoins - Big & Small Volume
Comparing USDT, USDC, and DAI transfer volume & the number of unique senders historically at the month level (2021 - most recently completed month). Then aggregating it at the UTC hour (with notes on NYSE, London, and Tokyo market trading hours) to estimate differences in stablecoin adoption across global regions. Also includes a parallel breakdown looking at only transfers of $1,000 or less. This data is for exclusively the ethereum blockchain.