WordNet sense 1 (caused to combine or unite):

amalgamated, intermingled

WordNet sense 2 (combined or mixed together so that the constituent parts are indistinguishable):

blended

WordNet sense 3 (involving or composed of different races):

interracial

WordNet sense 4 (not segregated; designated as available to all races or groups):

integrated

WordNet sense 5 (consisting of a haphazard assortment of different kinds (even to the point of incongruity)):

assorted, miscellaneous, motley, sundry

WordNet sense 6 (consisting of elements that are not of the same kind or nature):

heterogeneous, heterogenous