2.) Vassell, Johnson, Sochan, Wembanyama, and Collins
If the Spurs want to get weird, they could go with this jumbo lineup, which probably isn't going to happen immediately, but rather something that they could build too. The advantages include more size and length, with Sochan playing as a big wing beside Wemby and Collins. This lineup would be even more appealing if Vassell or Johnson were better playmakers, though the Spurs could use them more in that role. Sochan too.
Additionally, playing with Collins instead of another wing would allow them to play slower and more deliberately. With four capable shooters—five if Sochan's shot comes around—they would have enough spacing even with their oversized frontcourt. Even then, whether this lineup scores efficiently enough in the halfcourt to work will depend on how good Wembanyama is as well as the continued growth of Vassell and Johnson.
Limiting turnovers, crashing the offensive glass, and scoring effectively inside and out is a possibility with this lineup. As would having positional size on defense, including two big men to help wall off the paint and Sochan, who could guard the opposing team's best scorer. This would definitely be one of the more unconventional lineups, but one that Popovich might try this season.