Mishmash: a confused mixture, c. 1450; a mingle or hotch-potch; “a low word”—Johnson, 1755. See also jumble, medley.
Examples: mishmash of conceits and practices, 1676; of superannuated customs, 1876; of vile and wretched persons, 1600; of worshipping, 1860.
Dictionary of Collective Nouns and Group Terms.