How to check if a clock path is in global/regional/peripheral clock network?

During my experiment, I try to put a clock signal driven by I/O pin in a regional clock network. I find that there seems to be three different ways to do that:

1. set_instance_assignment -name CLOCK_REGION <name of regional clock region> -to <clk signal>

2. set_location_assignment CLKCTRL_R1 -to <~clkctrl version of clk signal>

3. set_instance_assignment -name GLOBAL_SIGNAL "regional clock" -to <clk signal>

What's the difference among the above methods? Which one is commonly used? If given a clock path, how can I check if it is in global/regional/peripheral clock network after compilation?

Thanks!