Core Data - Adding Multiple Child Entities To An Array - swift

Question

I am trying to build a to-do list app.
So far I have an entity for storing categories. Within the category entity, it has 3 relationships. One to a task entity, one to an event entity and one to a reminder entity.
In my app, I would like to be able to go into a category and see a tableView filled with tasks, reminders, and events.
So far, my tableView works with just have one child entity. This so done through the following code:
func loadEvents(with request: NSFetchRequest<Event> = Event.fetchRequest()) {
let predicate = NSPredicate(format: "parentCategory.name MATCHES %#", selectedCategory!.name!)
request.predicate = predicate
do {
itemsArray = try context.fetch(request)
} catch {
print(error)
}
print(itemsArray)
tableView.reloadData()
}
The problem happens when I try to add all 3 child types to the same array. Nothing shows up in the table view. (I have support for multiple cell types in my table view too.)
I have tried this code:
func loadItems(with request: NSFetchRequest<Task> = Task.fetchRequest()) {
itemsArray = []
let taskRequest: NSFetchRequest<Task> = Task.fetchRequest()
let predicate = NSPredicate(format: "parentCategory.name MATCHES %#", selectedCategory!.name!)
taskRequest.predicate = predicate
let eventRequest: NSFetchRequest<Event> = Event.fetchRequest()
eventRequest.predicate = predicate
do {
itemsArray.append(try context.fetch(taskRequest))
itemsArray.append(try context.fetch(eventRequest))
} catch {
print(error)
}
print(itemsArray)
tableView.reloadData()
}
But my table view just appears empty. My array is also an array of Any.
Any help on how to add the different child entities to the same array would be greatly appreciated. :)