Based on that list - I was able to click on 6 of them. I wouldn't say that I am "expert" in all 6 - but - I feel that I a fairly well-versed in them all.
First-aid - re-cert'd several times. My father has been an Industrial First-Aider for the majority of my life and has been part of the ambulance service for longer than I can remember (now retired). My mother has been in the medical field longer than I have existed (and is still in the field). I remember as a child reading medical texts and looking at pictures of burns and amputations and cuts and thinking that I was having a normal childhood. Blood - guts - gore does not faze me at all ..
Mechanical - If its broken I can normally fix it. Electronics, automotive, plumbing, electrical. I haven't done much with gas beyond propane stuff in trailers and natural-gas on my furnace.
Fighting skills - no detail provided
Camping and outdoor skills - camped since I was 6 months old - and that was only because I was born in December. Camping by hammock, tent, trailer, home-made shelter - winter and summer. No problems
Food preservation & storage - you all might have seen some of my posts about cooking food and such.
Communications - got the basics down. Thought about going deeper with ham / short-wave / etc. Have communications gear that include a mobile base-station CB for off-roading.