The best website is the Hancock County Historical Society, direct link to the cemetery listings:
http://www.hancockcountyhistoricalsociety.com/reference/ceme...The cemeteries inquired about here are listed, with directions how to get there, pictures, and burial listings.
On their list, you'll want to check Saint Mary (belongs to St. Rose de Lima parish), Cedar Rest (owned by the city), Brothers of the Sacred Heart (priests, brothers, bishop), and St. Augustine (priests & brothers).
Of course, their indexes don't contain burials after the lists were compiled, but they're a great start.