Tenants' rhymes with:
lieutenants, tenant's, tenants, lieutenants, pennants, tenant's, tenants, complainants, components, consonants, contaminants, continent's, continents, covenants, determinants, exponents, lieutenants, opponent's, opponents, opponents', pennants, proponents, remnants, subcontinents, tenant's, tenants
Tenants' sounds like:
taints, tandy's, taunts, teammates, tenant's, tenants, tends, tenements, tenets, tenths, tents, thematic, thometz, tints, tomatoes, tomatos, twenties, twenty's