  Calculable single-sector models provide an elegant framework for generating
the flavor textures via compositeness, breaking supersymmetry, and explaining
the electroweak scale. Such models may be realized naturally in supersymmetric
QCD with additional gauge singlets (SSQCD), though it remains challenging to
construct models without a surfeit of light exotic states where the Standard
Model index emerges naturally. We classify possible single-sector models based
on Sp confining SSQCD according to their Standard Model index and number of
composite messengers. This leads to simple, calculable models that
spontaneously break supersymmetry, reproduce the fermion flavor hierarchy, and
explain the Standard Model index dynamically with little or no additional
matter. At low energies these theories realize a "more minimal" soft spectrum
with direct mediation and a gravitino LSP.
