It could just be an exchange batching withdrawals. Here’s what that looks like:
https://mempool.space/tx/21b3dfce5091ea0fc4e4e48fa75d93170093c029083a2fd9949c051600ed5d09
Discussion
Agree regarding the 1:35 scenario where random amounts are output. This is thousands of the same transactions where 1 input is turning into 25 UTXOs of 836 sats. The 1:1 transactions of 546 sats are incoming again…