Those 2 cables are the same connector of course, except one is 'right angled'. They are for data, not power.
If you google 'right angled sata connector' you will see lots of options to choose from.
Power is supplied through a sata power connector which is one of the wires from your PSU...
Apple are not doing all of this just because of the hackintosh scene. They want control of as much hardware as possible by bringing it in-house. The lack of progress on Intel chips in recent years has no doubt accelerated that.