High-vis pants and shirt.

Dark colors that hide dirt and grease to an extent & don't have visible branding. Bonus if it has high durability that still allows movement. Plus some high-vis gear and other PPE.

Sweats, shorts, hoodies, sneakers.

Trousers. The rest may vary, but I always have trousers on. The dress code's pretty strict about that. So I wear chinos. Other than that, t-shirt and sneakers. And a lanyard with an ID badge.

PJs. I work from home. Just wake up, stand up and sit in my desk. Unless I have a very specific meet I just stay in my confy PJs. Meetins that require open cameras I just change the top

Usually trousers (really like the Eddie Bauer Ranier pants and shorts), golf shirt, grip6 belt, hiking boots and good socks. Bose QC35s if I’m in the data center. One customer makes me wear a safety vest. If I’m working weekends, in some data centers it’s warm enough for shorts (I’m not doing hardware installs).

If I’m working at home, whatever I slept in plus a shirt.

And how does this relate to what you wear to a job interview

Pyjamas

I work from home so whatever. If I go into the office I wear black jeans, a polo, and my business crocs.

Polo/chinos

Jeans, plain merino tshirt (no stink) and Jim Green African Ranger barefoot shoes (because so comfortable!)

Work in IT.

My startup doesn't have a dress code, so what I wear is about the half-way point between business casual/thrift shop and homeless/grunge. Boots or wedges, dyed hair, septum, occasionally a graphic tee. I like colorful shit. The least complicated/unflattering/whorish dress I can find, whatever least likely to snitch on me for weight gain.

Jeans or Cargo pants, a sweater/hoodie and sport shoes.

When rainy Jeans/Cargo, hoodie and waterproof boots.

Beige Icelandic Sweater, brown jeans and fancy black shoes. I look dazzling :)

Sweatpants, and old t-shirts or polo shirts if there's a video call planned for a given day. I WFH for a company you've heard of, and all the video calls in question are internal.

IT person as well, generally just jeans, sneakers (or other shoes) and some kind relatively plain shirt. Whatever is comfortable and does not contain any shocking images.