If you can put $50,000 on the JetBlue Business Card (Barclays) in a year, you're one step from 
JetBlue TrueBlue Mosaic 1. The card earns one tile per $1,000 spent, and 50 tiles clears Mosaic 1 automatically — no flying, no separate application, just tracked spend against JetBlue's own chart.
That status doesn't dead-end at JetBlue. 
Southwest Rapid Rewards' official status-match chart converts Mosaic 1 straight into A-List, and A-List in turn matches into 
United MileagePlus Premier Silver on United's own chart — a free two-hop chain that the reference below maps in full, including the flying each program wants from you before its trial window runs out.
Of the three, the card spend is the only step fully in your control; everything past Mosaic 1 depends on Southwest's and United's match charts staying open as they are today. If Mosaic 1 is the goal, the $50,000 spend is the whole story — if it's Premier Silver, plan on two more matches after that.
multi-stepofficial
how (2 steps)
JetBlue Business Card (Barclays) → JetBlue TrueBlue Mosaic 1 (confer, official) 🇺🇸 — Same as JetBlue Plus Card: 1 tile per $1,000 spend/year; 50 tiles ($50,000 spend) = Mosaic 1, no flying required.
JetBlue TrueBlue Mosaic 1 → Southwest Rapid Rewards A-List (match, official) 🇺🇸 — Official Southwest status-match chart: JetBlue Mosaic 1 -> A-List. Same 120-day promo / 3-round-trip-or-11,500-point extension terms. Registration open through 2026-12-30.
multi-stepofficial
how (3 steps)
JetBlue Business Card (Barclays) → JetBlue TrueBlue Mosaic 1 (confer, official) 🇺🇸 — Same as JetBlue Plus Card: 1 tile per $1,000 spend/year; 50 tiles ($50,000 spend) = Mosaic 1, no flying required.
JetBlue TrueBlue Mosaic 1 → Southwest Rapid Rewards A-List (match, official) 🇺🇸 — Official Southwest status-match chart: JetBlue Mosaic 1 -> A-List. Same 120-day promo / 3-round-trip-or-11,500-point extension terms. Registration open through 2026-12-30.
Southwest Rapid Rewards A-List → United MileagePlus Premier Silver (match, official) 🌍 — Official chart match: Southwest A-List -> Premier Silver. Extend with 5 PQF + 1,700 PQP within 120-day activation window.
Miles