| Category | Immediate relative, family preference, employment preference, diversity, humanitarian, or another route. | Petition, selection notice, category proof, qualifying relationship, job evidence, or eligibility basis. | Different categories use different queues; comparing the wrong category is misleading. |
| Priority date and Visa Bulletin | Priority date, preference category, country of chargeability, and whether Dates for Filing or Final Action Dates apply. | Receipt or approval notice, Visa Bulletin category, and country-of-chargeability evidence. | A case may be documentarily ready but unable to move because the date is not current. |
| Route and agency stage | Adjustment of status or consular processing; USCIS, NVC, or consulate stage. | Forms, notices, account messages, appointment letters, and address/travel history. | A USCIS timeline and a consular timeline are not the same wait. |
| Civil and financial evidence | Birth, marriage, divorce, police, court, name-change, sponsor, tax, employer, or job evidence as required. | Civil records, translations, affidavit of support or job evidence, tax documents, and employer records. | Missing civil or financial evidence can stop a case after the main filing is accepted. |
| Medical and inadmissibility issues | Medical exam route, vaccination records, overstays, arrests, removals, fraud concerns, or waiver needs. | Civil surgeon or panel physician documents, vaccination records, court or immigration records, and legal advice where needed. | A case-specific issue can make public averages much less useful. |