I use Sync.com for years (since 2015 after my very privacy heavy swiss cloud service shut down). It’s Canadian, the end-to-end encryption (on device,upload and cloud) is the highest I encountered and it’s extensive zero-knowledge policy was my reason to sign up.

They added some nice sharing features with quite the extensive control and easy Setup. So might be worth checking out.

And obligatory referral link for a free account 🙃:

https://www.sync.com/?_sync_refer=7265130