There are the types of patron, but within each of those types are myriad individual possible beings which could be the patron, and each one carries the potential for a different relationship with their warlock.
Yes and no...yes you are in theory correct but specifically because our patrons are actual NPCs we know for a fact we have some interaction with as it's been confirmed warlock players can interact with their patrons they are also very specific NPCs in BG3...so there are only three of them possible for the player to choose from and they may well appear in the wider game as part of quests or side quests even for non-warlock players.
