Please, you're overthinking this. The ideal ratio of carbs to protein for post-workout recovery is not some magical formula that's going to make or break your training. It's not like it's a one-size-fits-all solution. Just get some protein and carbs in your system within 30-60 minutes after your ride and you'll be fine. The body's ability to repair and rebuild muscle tissue is not going to be drastically impacted by a 2:1 or 3:1 ratio. And as for varying levels of muscle mass or body composition, it's not like there's some secret formula that's going to account for all those differences. Just eat to support your training and don't overcomplicate things.