Ah, a subject I could go on and on about...
But to address the OP specifically:
1. Georgetown has a 2020 catcher commit already; they are not likely to commit a second one. You HAVE to look at current rosters and rising class commits and even then you may not have all the info you need (transfers, commits not listed, etc.).
2. Princeton is mostly done with their 2020 class and now have to recruit their primary needs for any remaining slots they may have. And that's where academic index (AI) comes in... If they have two slots remaining and they need a pitcher first and catcher second, they will take the best pitcher they can even if his AI is low. But if it's low then they will have to find a REALLY smart catcher to offset that pitcher's AI.
I definitely agree the catcher position IS tough for all the reasons others have posted. It has been a tough journey but we've learned a lot along the way. The biggest take-away I can share is recruiting is mostly based on need and timing. They don't often line up for those being recruited!