I kind of feel that "Wisdom" for a cleric caster is a cow....a sacred one, even. (Heh. Cleric. Sacred. Not intentional.)
I would look at things comme ci,
Intelligence casters: Wizard (default/primary), Druid (secondary, there's a LOT of knowledge that has to go into, not just the lore/learning of nature/the wild - the animals and their behaviors/habits/habitats, the right plants for eating or healing (or poisoning), simply the names/recognizing of all the trees for gods' sakes (forget about fantasy world types), reading the weather, moving unnoticed/finding one's way, etc... etc... but, also, knowing/remembering/being able to repeat the techniques and attunement to the natural world to "focus magic into existence/change." Druid really should be an Int (or, maybe, Cha) caster. That same knowing/remembering/repeating things argument, I think, could be made for an Int. Sorcerer (if one insists on having such a class).
Wisdom casters: Cleric (default/primary), (in keeping with the thread) Warlock (secondary).
Charisma casters: Bard (default/primary), Paladin (secondary)
The problem I see with extending caster stats into Constitution, is that then you are moving into "physical attribute" land. And Dexterity and Strength do not lend themselves, easily/obviously, to types of spell casting/casters.