I'm not going to go into detail about physical features, but for clothing, lab coats! Not in a doctor scenario, more of a scientist thing. May or may not be related to my love of Steins;Gate, heh heh.

black tshirts and jeans. and sunglasses

I don't know why but I love when my guy wears his Cabela's tshirts or other outdoorsy type of t-shirts. I like an outdoor/country guy. I like faded blue jeans, especially some with some wear and tear, a hole or two. Hunting boots or Carhartt boots. Camouflage. Yum!

I like spiky hair on all genders and also long jackets and boots.

I like office attire. Crisp white button up shirts, pencil skirts, well fitted suits, particularly on men, and the suit jacket off and the button up long sleeves are pushed up a bit below or above the elbow. A tie that I can twirl around in with my fingers and use to pull him in for a kiss.