Your commission comes from applicant purchases on live postings. So the question is never "how big is this company" — it is how many roles do they have open, how often, and do those roles attract a lot of applicants.
That points to employers hiring continuously: operations and logistics, healthcare and care staffing, hospitality, retail and warehouse management, field services, and staffing agencies of any size — an agency with 15 live roles beats a prestigious firm hiring twice a year.
Weak fits: companies that hire once or twice a year, highly specialised roles with a handful of applicants each, and anyone already committed to an ATS they have just paid for.
The best signal costs nothing to check — look at whether they currently have several jobs posted anywhere. If they do, they have the problem Offerrole solves.
The partner help centre covers attribution, the ledger, payouts and the selling rules.