I’ve got wallet and lighter front right, phone and cigs front left, and keys on a carabiner tucked into back right. Back left is basically always empty.
Front left: lighter(s), earbuds, car key(only if at work, I lock my house keys in the car as I have a habit of leaving my coat in the lunch room)
Front right: sometimes phone, if at work nothing as I put my phone in my jacket breast zip as I'm a stone mason and I really don't want to smash my phone...
Back pockets: nothing, sometimes my travel mug if I'm not wearing my work jacket.
Work trousers cargo pocket: tobacco/vape
I do, when I'm not at work. The car key has one of those little clips on, so when I'm at work the car key either goes in my left pocket if I'm not going to need my work keys, or gets clipped on my work keys. When I'm out on a weekend the car key gets clipped on the house keys