I have an app approved by Apple waiting to be released while I collect more advance users through my landing page. I am worried about someone making a copycat app with the exact name and getting approved by Apple. For example, let's say my app is named "Liquid - Dynamic Workout" (the real name is slightly more unique). Could someone release an app before my set release date that is a copycat titled "Liquid Workout"? Additionally, for example, the domain liquidworkout.com is being squatted on, so I had to register liquidworkouts.com.
Basically, if my app is already approved by Apple for app store release, and is on TestFlight, can someone still submit an app with a similar name, similar logo, and the same function? Do the copycat guidelines still apply?
https://developer.apple.com/app-store/review/guidelines/#copycats
P.S. My app is based around a singular, unique function. I've looked through tens, maybe hundreds, of related apps.