Doing this off the top of my head. Lots of stuff is secondhand from people I know (changing weight, so we're trading wardrobes) or thrifted because I'm a broke-ass student.
1 ocbd (almost white-blue)
2 denim/chambray button downs (blue)
2 horribly ugly short sleeved, heavily patterned button downs that fit PERFECT
4 button down shirts (2 gingham, navy, blue/white striped)
~8 flannels (greys, blues, greens, reds)
countless t shirts, both crew and v-neck (mostly blue, salt&pepper, grey, white and black, very few with patterns) and countless band merch shirts (easily over 20)
4 henleys (2 grey, brown and white)
4 green polos that are my work uniform
4 pullover sweaters (2 grey, white-ash, and some nice, ugly thrifted one)
5 hoodies (Roots salt&pepper, 2 black, navy, grey)
5 chinos (grey, black, navy, khaki & dark green)
3 pairs of dem raws (UB301, Gap 1969s, and cheap WeSCs)
~8 pairs of Levi's denim (2 511s in black and (now faded) indigo, 1 crazy faded 513s, 2 black 514s, and a few 501s and 505s in black for work/outdoorsy stuff)
1 pair of black Topman jeans (actually pretty nice)
1 pair of Cheap Monday black denim
1 pair of flannel lined Old Navy denim (ugly as sin, but sooooooo warm)
A lot of jackets of varying thicknesses/waterproofness for crazy Canadian weather.
1 longish, grey wool coat
1 short, black wool jacket
2 black leather jackets (currently in want of a brown bomber)
1 Sears Wearmaster jacket from, like, the 80s (Navy outside, red inside -- fits like a trucker)
3 denim jackets in blue, black, and somewhere between the two
2 thin waterproof jackets (Levi's and North Face, both navy)
1 green quilted Ralph Lauren jacket
1 black Sixpack France bomber (one of my favourite pieces)
1 ugly blue corduroy jacket which is pretty toasty
6 toques/beanies (Red, 3 black, green, navy)
7 scarves (grey, black/white/red HBC Olympic thingy, navy/white/grey random pattern, grey/black herringbone, brown, white/navy (might actually be a prayer shawl, I'm not sure), black/grey/white stripes)
ALL of the wools socks.
3 pairs of army surplus boots
1 pair of black Dr Marten's MIE
2 CDBs (brown and black suede)
1 black leather Desert Treks (fuck you mfa, they're comfyass shoes and they were free)
1 Chuck Taylor, black, hi-top
2 Vans (106 Vulc, which are the best, and Chukka Lows)
1 pair of Lee Cooper brown boots
I think that's all, if not, most of it. Realistically, if I were to cut out my 'work/go to hell' clothes, it'd be 2/3rds the size it is now. All of this does fit in my closet and on a rack behind my door.