Canada

Jerico is good quality and worth the price. We’ve been using them for our festival shirts for over a decade. You can usually get discontinued styles/colours at a good discount. Personally I like the bamboo rayon, but the cotton is good too.

Kindred Coast, also on the pricier side ($39), but their shirts are super soft and great quality.

Also, have you already checked madeinca.ca? they have quite a few options

Stanfeild shirts are long to stay tucked. They do use two different kinds of material for Tshirts in. My experience. A heavy weight cotton like the old Gildan shirts and a newer half poly blend which is softer but much less durable.

House of Blanks is great for basic t-shirts. They have some good sales a couple times a year.

Given what you say about Province of Canada that is likely where they get their blanks.

I just ordered from Jericho a few months ago to try out. I got 2 bamboo shirts, one ring spun, and a bamboo hoody.

The bamboo shirts and hoody are my new favorites. Super soft and nice fit. So far they've been holding up well in the wash, and I would recommend.

The ring spun I'm less thrilled on, it hasn't held its shape as well and it's nothing special. Would definitely recommend their bamboo stuff though. If you sign up for their mailing list they seem to have regular sales.

https://www.houseofblanks.com/ is another option, but they're all heavyweight and I'm not a fan of that.

Are you sure the Stanfield shirts are made in Canada? All I find on their site is a statement in About that "the majority of our products are to be made in Canada". I'd be surprised if T-shirts were one of them, that ship sailed decades ago.