It's not complicated but it's not exactly easy to just...write. It's knock off of what I ate at O'Charley's when I was in Tuscaloosa. In the colder months it was always b-ball, bowls, and beers. A bowl of hot potato soup on the way home on a cold January night...geez, hit the spot.
I can't get real specific because I can say how many potatoes. I can say I use red. It's a mixing bowl full...and that bowl is normally 5 C's of diced apples...so?
I don't know if it's "my thing," though I can't say I've had anyone mention using chicken bullion to boil the potatoes. Boiled a little over 3/4 done. (I like to take my masher and make it a tad thicker.)
Skillet with roughly a 1/4 c of butter and flour...one of those slow whisk things until the lumps are pretty much gone and then add 1/2 and 1/2...probably seven or eight cups today.
Block of sharp cheddar.
1/2 block of Philly Cream Cheese.
Both soft, then mixed in with the rest in the skillet. I like hot sauce here...1 tsp may be good enough for you.
Low heat...half of an hour, covered. Stir it every few minutes.
Top it with bacon bits, chives, a little grated Jack, with group pepper.