US Firms That Sponsor Visas?

Currently looking to jump to the US for personal reasons, doesn't matter where at the beginning (west coast, east coast, Texas, Florida...anywhere). I'm Canadian and wondering which firms, specifically real estate ones, are willing to sponsor candidates?

Open to investment banks, developers, large insurance/ lifecos, private equity funds, etc. to start.

Any names specifically would help a lot instead of keeping things vague. Thank you!