I don't think all these are contemporary but as someone who loves post rock and instrumental music here are some artists that make it into my playlist pretty regularly. Hope this is helpful! The ones near the top I probably listen to more regularly right now but it tends to rotate.
Sleepmakeswaves
We Lost the Sea
Explosions in the Sky
Codes in the Clouds
Ef
Russian Circles
Collapse Under the Empire
Mogwai
Secret Gardens
Red Sparowes
Moonlit Sailor
Maybeshewill
65daysofstatic
Caspian
Sleep Dealer
If These Trees Could Talk
Balmorhea
God is an Astronaut
The Evpatoria Report
Sigur Ros
False Horizon
This Will Destroy You
pg.lost
There's A Light
Oh Hiroshima
Tides from Nebula
EDIT: got around to checking my library and have a few more.
Distant Dream
Saor
Those Who Ride With Giants
For Giants
U1327
The Best Pessimist
Saxon Shore
Dorena
The End of the Ocean
Random Forest
Joy Wants Eternity
Paint the Sky Red
Eldamar
we.own.the.sky
Eleventh Vibration
Shadow of Io
Jake Eves
The Last Sighs of the Wind
In hindsight I don't know if a giant list is the most useful thing but it's here if you want it.
My favourite thing is when very wealthy people say that they worked hard, as if the rest of us are just sitting at home all day.