Hahahaha!
Everything fits into a 6-foot closet and a single bureau.
I work from home, except for infrequent travel to client sites, and I exercise a lot, often in ways that require somewhat specialized clothing. I do not wear exercise clothing for non-exercise activity, although I frequently work in shorts and a shirt. I bike commute around my extremely casual town, so that dictates a bit about clothing. Within the limitations of wearing shorts all summer, I try to dress somewhat like a reasonable grown-up. (So reasonable-looking shirts and non-stretchy waistbands, mostly.)
I have 6 feet of closet space, divided nicely between a tower of shelves (containing sweaters, jewelry, shoes, and miscellaneous sleep and exercise clothing - in this case mostly very cold-weather stuff, i.e. fleece tights and rain pants for skiing- and some hanging space for a few dresses, some work clothes for when I have to travel, and a bit of other clothing that needs to hang, and one bureau that's 5 drawers: top (undies including sports tanks, and scarves), socks, tops, bottoms, and the bottom drawer is more athletic stuff (bike shorts and tops, yoga/pilates bottoms, sports bras, swim stuff)
Pants I wear all the time: 5-6 pairs, and about 6 pairs of shorts that I wear most of the summer. There's a pair of leather pants and a pair of suede pants hanging for fancier activities. I still have a couple of skirts that I wear very, very infrequently. Three or four pair of work-appropriate pants for work-related travel.
Tops: 5 or 6 of each: sleeveless, short-sleeved, long-sleeved, and another 5 zip-neck tops that I wear under sweaters in the winter and as a top layer on cool evenings in the summer. (Another 6 or so hanging short sleeved dressy tops and 6 or so long-sleeved overshirts, and a few really fancy outfits for work and infrequent socializing.)
Sweaters: haha, I have a problem with buying cashmere/merino sweaters at thrift shops. On the other hand, they're all visible (none get put "away"), and I rotate through them in the winter. I should clean out some more. I also have a couple of ultra-heavy sweaters for the part of winter when I'm working from home and the office gets down to 50-something during the day.
Jackets: 6-8, ranging from waterproof rain jacket to a lovely boiled wool jacket for nicer-looking winter wear, and several work jackets. 1 jeans jacket I've had since high school.
The upside: after Kondo-ing several times, I have a few coats in the front coat closet (that get frequent use) and everything else fits in my closet + my bureau with plenty of space and no cramming. (Including a good long wool coat and a long dressy raincoat <- which I probably will never wear, and should get off the computer and go stick into the giveaway bag.)
The metric for keeping is: do I like/love it? Do I actually use it? Do I feel good when I wear it? I actually just gave away a shirt that I like except that it was just a little short, and I'm too damn old to have my belly sticking out when I reach for stuff.
You are inspiring me to get off the computer and go clean out my closet again.