Intuit has one of the best interviewing processes I've ever seen -- the 2 phone interviews (first with the recruiter, then with the hiring manager) each happened on day after the other, and the feedback was super timely. The on-site interview was shortly after the phone interview with the hiring manager, and consisted of a half day with about 6 different business partners in my department. Everyone was super professional, friendly, listened, and asked insightful questions. I had a great feeling after the interview, and they moved really quickly in making me an offer (and even accommodated a vacation that I had planned). Awesome interview process.

Ghosted, after putting in so much time and effort. I don't think that there is any excuse for ghosting candidates, after multiple follow ups. Its understandable that sometimes situations might have changed, say the role is being put on hold. But the least one can do is to acknowledge that they are working on providing an update. There is a high level of accountability problem across the board for recruiters these days. They have one job (literally there is someone else for scheduling). I won't be naming names, but what goes around comes around. After all Its a small recruiters' market.