well, in general terms you can divide them as follows:
Group 1: "Cool" grower - The green leaved, single flowered plants, e.g. Paphiopedilum insigne & Paphiopedilum spicerianum and most complex hybrids, need a bit cooler conditions.
Group 2: "Warm" grower -which could be divided in:
Sub-group A: The mottled leaved plants, e.g. Paphiopedilum bellatulum and Paphiopedilum Maudiae Type. These plants, normally require warmer conditions than those from group 1.
Sub-group B: The green leaved paphiopedilums with multiflowered inflorescences, e.g. Paphiopedilum rothschildianum, will generally require more heat than their mottled leaved plans.
Note that I said "generally speaking", as there are some exceptions, e.g. Paphiopedilum venustum is a mottled species, but as far as I know, needs cooler conditions.