I'm a wimp so don't ride in the gucky weather if I can help it, but if I get caught out there I do a deep clean that very evening. My deep clean is similar to the OP's in that I remove the wheels, put the bike in the stand and then deep-clean the drivetrain with degreaser, old toothbrushes and rags. If it was really bad? Sounds stupid, but I remove both tires and clean the sidewalls with a scouring pad. That way the sidewalls don't turn gray/black too soon and they live that bit longer. If the bike in question has a cutout in the BB shell, I'll remove the NDS cup and see if any gunk got shoved up into the stays, but usually that's not an issue. I'll shine a flashlight up the fork steerer to see if anything got sprayed up there, too. Don't forget to use an old toothbrush on both brake fixing bolts if they're recessed because they gunk up quickly, too (of course, if you're running fenders the last couple don't apply).

Last thing I do before putting everything back together is eyeball each brake pad and use a dental pick to remove those tiny chips of rock which always seem to become more easily picked up and embedded in wet weather. These little guys act like sandpaper and score sidewalls, wearing them out before their time.

The time involved in clean up afterwards, plus the increased wear of braking surfaces and contaminated tire sidewalls are major factors in my personal decision to refrain from riding in the wet. Others are much more hardy and worry less about their equipment, and I get that. I only end up having to do these things to re-animate my bike if I get unlucky and the skies open up while I'm far from home

A very rare photo indeed:



DD