Seeking Solutions for Exporting Large Department Lists from Companies

Quick question for anyone who’s run into this before: I’m working on a project where I need to upload full department lists (25–200 people per company) from about 2,000 companies into an AI tool that narrows them down to ~20,000-30,000 key titles for outreach. I don’t need emails upfront (Clay handles enrichment), just names and job titles. ZoomInfo (I have subscription to ZI) only gives me 5,000 exports/year, which won’t cut it. Has anyone found a tool or workaround that lets you view and export large volumes of department-level org data (think ~500,000 rows) with just names + titles? I do have Sales Navigator. Open to any paid solutions or creative hacks.