Tav is just some random dude. If the nautiloid tentacle had grabbed the person next to him on the street, the story would be about them instead.
Now, Durge is the special chosen of Bhaal born from his own blood who kicked off the entire game's plotline. But Tav absolutely fits the bill for random nobody with nothing special.
I was going to say Fallout 4, you're a random prewar soldier, but then I remembered that Dogmeat is a supernatural immortal being that did choose you and kicks off the plot as part of his ongoing duty to solve the various problems of the wastelands, so it doesn't count since I guess technically you're a "chosen one" by the gods. But I would argue the New Vegas does count as having a random nobody protagonist. You're just a courier who helped build The Divide, your skillset is...carrying stuff.
Off the top of my head, Solasta protagonists are just a band of adventurers, Outer Worlds you're just an average colonist from earth and you're only special because everyone else around you has degenerated kind of like in Idiocracy, in Kingmaker you're just an adventurer and the game would play the same if Amiri or Tartuccio or someone else became the defacto leader of the party and was thus crowned, and while most Elder Scrolls protagonists are indeed chosen ones the exception is Oblivion in which Martin is the chosen one with the special bloodline and you're just his chaperone (although this gets messier because you actually were chosen by fate to be his chaperone so we can go around in circles but you get what I mean, you're not the important one this time).