Ah! I'm not sure if Blender is capable of that, but I'll try. I'm a bit accustomed to using Blender with FBX models with embedded textures, so it might just be a matter of inexperience on my part, and I imagine trying to import into a different program from the one they were made in isn't doing my any favors.
I'm not super familiar with Unity, so I almost definitely did do the default render pipeline; everything was indeed purple. I'll follow that video you sent and try that process. That should probably fix it I'd imagine, so hopefully there won't be any need to fiddle with Blender. Thank you for replying so quickly and being so helpful!
Edit: I missed your other replies because I just replied to the comment from my notifications, sorry about that. I'll follow up on those other tips too. Thank you again!