Here ya go: This is a rough idea. Hope it helps.
1 Betta with 8 Rummynose Tetras would stock your 10 gallon by 97%
1 Betta with 8 Glowlight Tetras, 6 dwarf cories= 90% stocked
1 Betta, 8 Cardinal Tetra=98% stocked
1 Betta, 6 Pygmy Coridoras, 7 Neon Tetras=100% stocked
1 Betta, 5 Kuhli Loach= 86% stocked
And this would be absolutely adorable IMO
1 Betta, 6 Otoccinclus vestitus, 6 Dwarf Pencilfish + 96% stocked
If you choose to use Otos they would need your tank to be mature first...meaning they will need the tank to have algae established. You can supplement their diet though. But they will do much better if the tank has natural algae growing in it.
One more suggestion would be
1 Betta, 6 Otocinclus Vestitus, 6 Harlequin Rasbora (heteromorpha type)