Core support/radiator support holes

[Harrison.]

Can someone help me identify a few of these holes? I'm filling un-needed holes and there area a handful I can't figure out. First off, there's a big hole right above the hole for the parking lamp on the passenger side :


Then on each side near the top there is this little 1/2" or so hole:



And finally there are two small 3/8" or so holes right at each corner of the opening for the radiator:


Do I need all of these? Thanks!