I'm wondering what the best procedures to a fish-in cycle are. I've read to do WC every day, WC every other day, no WC for 2 weeks, feed once every other day, feed once daily, feed 2-3x a day. Any suggestions, opinions or facts?
It depends on how you do it. If you use TSS then you can't do a water change for two weeks as that can disrupt the bacteria.
If you don't use TSS then you can do water change whenever you need to keep the fish happy, and healthy while the tank's ammonia and nitrites go up. I also suggest using stability and prime to make it easier on the fish, and getting fish that you are going to keep that are hardy enough to go through the cycle process.
As far as feeding schedule that is kind a personal opinion type thing. I personally feed my betta twice a day, and snails get a veggie, snail jello or algae wafer once a day. I feed pellets six days, and frozen brine shrimp twice a week. Then a deshelled pea once a week to help with digestion.
Some people like to only do it once a day. Some like to skip one day of feeding to try and prevent fish from getting bloated. They have such small stomachs that they don't need much.