H1B, H4 Visa

Myself: Work permit holder in Canada, No PR, Indian Citizen, Married to H1B holder. My spouse lives in US.

Timelines:
Got an appointment with the Toronto consulate. As the slots are not available, I suggest booking in different cities/provinces (whichever is convenient for you) and later reschedule. I Rescheduled it 4 times ;) (Calgary July slot, Halifax May slot, Toronto May slot, Toronto April slot) Keep checking at odd times.

Interview day 14th April 2022:
Toronto consulate has a convenience store at 200m where they provide lockers so you can keep your luggage (bags, mobiles, etc.)

When you enter they ask for documents, and have the ds160 confirmation page and passport ready.
Security check,
Counter 1. ds 160 + passport
Counter 2. Pre-check where they ask for the ds160 page, photo and legal status in Canada (Work permit in my case)
                  since mine was H4, they asked for my spouse's i797 copy.
Counter 3. Fingerprints
Counter 4. Interview (have your document folder ready, in case they ask for any extra documents)

My interview questions:
Took my ds160 page, passport, spouse's i797.
Do I have a previous US visa? (cz he looked at my passport and I had a previous B1/B2)
What's my status in Canada? (I'm on work permit)
Does your spouse live in the US? (yes)
Do I have a marriage certificate? (yes I had mine with me, showed it)

Visa approved. Will get the passport in 1 week (I'll update the timelines for the same)

Document list :
Legal status in Canada,
Spouse's i797
ds160 confirmation page
photo with proper dimensions
marriage certificate
2 photos

Additional OPTIONAL, good to have document:

Spouse document:
2 years W2,
2 months pay stub
job offer letter
Passport and visa stamp copy
Marriage + any photos together (I took 12-15 pics)