Do subclasses get access to spells that their classes don't besides their subclass prepared spells? (5.5e)
I like making Homebrew, whether it be Monsters, Subclasses, or whatever else Recently, I've gotten into making Homebrew spells, but one thing I noticed confused me. When making a spell, you're able to choose which classes get access to the spells--however, you can also add subclasses to that list, even if the class the subclass if for hasn't been marked to get the spell.
This perplexed me, since I wasn't aware that a subclass's spell list expanded beyond the prepared spells that they get as part of the subclass features. For example, an Oath of Vengeance Paladin won't get any Level 1 spells that are different from the regular Paladin Level 1 spell list besides Bane and Hunter's Mark.
Am I wrong here? Does a subclass's expanded spell list go beyond just the prepared spells of their subclass feature? Or is this option on DNDBeyond something to be ignored?