The biggest help for me with this was more fans. I went from 1 fan to 4 fans and now the sweat rarely gets to the floor.
I use two of the typical bath hand towel size. One on a shelf within reach for mopping my face periodically and one that I lay over my bars that my hands and drips from my face go on. I have a sweat net that gets the bike between the cockpit and seat. I don’t find the towels scratchy, but everyone has different sensitivities.
I tried headbands, but felt like my head was warmer with them on. I didn’t like that.