Non of your suggestions have any real synergy. You are mostly just giving up things and don't gain much of value in return.
For example Cleric/Druid makes no sense. You will have the same caster level as a single class Cleric or Druid but just won't have any known 6th level spells. You just gain a few additional known 1st and 2nd level spells. But considering Cleric and Druid spells overlap a fair bit, it won't even be that many.
Cleric 7/ Ranger 5 might be the best option. You still get the extra attack from the Ranger and get the Domain Spells Guardian of Faith + Death Ward. Your caster level would be 10. So still a lot of spell slots available. For leveling it kinda depends on the rest of your party but I would say the first 5 level go into Cleric, then you use Withers to respecc 5 into Ranger to gain the extra attack. Then put the rest in Cleric again. Any Bow build with a single attack will feel rather underwhelming. Yes you lose out on a feat but you are basically trading a feat for a 2nd bow attack. Cleric 8 for Radiant Strike would be pointless anyhow since it's melee only.
Druid 7/ Ranger 5 might work in a similar way. Espeically if you like Moonbeam you can still have a single 5th level Moonbeam. Going higher in Ranger would hurt your Caster level too much.
But again, you don't really gain any real advantage. For example Wizard 1/Cleric 11 is the same as Cleric 12 but you have access to all Wizard spells you can learn from scrolls including 6th level wizard spells. Or if you Mutliclass Ranger with Rogue to gain sneak attack, or with Fighter to gain action surge. That would give you some actual advantages.