Three stages, thorough, but manage your expectations going in. The interview process was three stages: an introductory call paired with a design test, a presentation of that test, and a final HR round.
For a corporate role it's not unreasonable, and the process itself was organised. The test gives you a real sense of the work, and the presentation stage lets you walk through your thinking - both fair asks for a design position.
HR was straightforward, no surprises.
Where I'd caution future candidates, go through all of that, and then make sure the role you're walking into actually matches the effort you put into getting it. The interview process sets a certain expectation of structure and professionalism. Just know that expectation doesn't always carry through once you're in the door.