All of them. Kinda short list, don't ya think? For essential studio work I'd add a nylon string, an electric and acoustic 12, some kind of arch top jazz box, some kind of lo-fi funky Harmony (or similar) and a Gretsch of some kind w/a Bigsby. Maybe a baritone too. There could also be multiples of each - different string gauges, pickups, etc. And don't forget your amp and pedal essentials.