In my experience, the proclivity of a company to negotiate entirely depends on how quickly they need to hire someone. If the requirement is to scale up immediately, once at the offer stage you're the fastest person on the planet who can start working in the role, and this gives you significant leverage.

If the company can afford to onboard someone any time in the next few months, they don't need to negotiate. They just need to keep the pipeline flowing until some candidate accepts their lowball number.