When it comes to showcasing the biggest names across the most popular mainstream music genres—pop, rock, country, house—this year’s Austin City Limits lineup, like all its lineups in recent years, leaves little to be desired. (Case in point: Luke Combs, Doja Cat, the Killers, et cetera.) Similar to the hundreds of thousands of fans who gather at Zilker Park across the festival’s two weekends, many of these superstars travel from all over. But other artists—especially up-and-comers, with whom fans may not yet be familiar—don’t hop on private jets to get here the way Sabrina Carpenter or John Summit do. ACL does well to balance huge acts with lesser-known, local ones, who could conceivably stroll over from their homes to perform.If you’re anything like Willie—with Texas…