After several weeks of frustrating trial and error, I finally pin-pointed the cause of these LinkerLoad crashes - it was my UI. Though, I’m still not entirely sure on the specifics, it seems that my HUD UI was referencing too many actors/files throughout my project, essentially causing nearly the entire project to be loaded all at once and this exceeded some limitation of LinkerLoad.
Just to note: I scoured many crash logs while trying to figure out the problem and not one of them ever mentioned a single file from my project as being the cause. So if anyone is getting a similar crash with no references to your project in the linkerload crash logs, it might be related to this max load limit.