For what it's worth, here is my personal list, weeded out over the years. This is for safaris where you do walk miles and miles of bush, not for "hunting" from a pickup in a fenced property.
1) Shoes, 2 pairs (you can get your feet soaking wet in the morning dew, and want to be dry in the afternoon). Highest quality you can afford. They have to fit you, be light, mid-height. The tongue's sides MUST be attached to the upper, so that seeds, sand, and stuff don't enter the shoes.
2) Socks, best 100% wool (thin), second best 100% cotton, no third best. 6-7 pairs for a two weeks safari. Always keep at least one dry pair in your backpack.
3) Shirts. I prefer short sleeves, whatever works for you. Loose weave, very breathable (a good test is to put the fabric over your mouth, and check how easily you can breathe through). Linen, linen-cotton, cotton. One size bigger than your office size.
4) Hat, wide-brimmed. I like Tilley hats, there are a million-and-a-half other brands out there. Get one with good ventilation...
5) Pants, much less critical. Whatever you're comfortable in, take enough spares. Longs are better than shorts, thorns and razor-sharp grass will show you that.
6) T-shirts, cotton, thin, loose fitting
7) Fleece. Nights can get cold, and sitting on the back of a pickup at 5:30 AM can be chilly.
8) Flashlight. Good LED, USB-rechargeable. Fenix, Nitecore, there are other good brands out there.
9) Knife, 4"-6" blade
10) Good belt
11) Ammo belt pouch
12) Second good belt, keep your knife and ammo on it so they're easy to remove when back at camp
13) Phone charger, car phone charger, spare charging cables, good powerbank
14) A packable raincoat
15) Small backpack
Travel with soft bags, no hard suitcases. Makes life much easier for whoever has to fit your luggage in a car's boot or in the back of a bushplane.