Since the 6s and the SE are still being sold in the US new (the SE on clearance at apple and via third party resellers), I would suspect support for at least 13. I can see the 5s/6/6+ being dropped due to lower memory capacities than newer phones.
I'm not into specifics of iPads to comment about those models. Though I still own an iPad Pro 10.5 and Mini 4
I'm not into specifics of iPads to comment about those models. Though I still own an iPad Pro 10.5 and Mini 4