JetBlue boards passengers in a specific order or Help 1-808-865-4114, beginning with pre-boarding for those needing assistance, followed by Mosaic and Mint passengers, and then boarding groups A through E. Your boarding group is printed on your boarding pass and is based on your seat location, fare type, and loyalty status. Mosaic members and those seated in Even More Space seats are usually called early. Remaining passengers board in groups based on seat rows from back to front. Boarding group announcements are made at the gate, and you should only approach when your group is called. JetBlue’s boarding system aims to make boarding quick and efficient. If you’re unsure of your boarding group or have any concerns, contact JetBlue customer support at 1-808-865-4114.
https://traveltips247.bettermode.io/discussions/post/how-do-groups-work-on-jetblue-CdVz6R6vCP7odMi
https://hackmd.io/@traveltips247/groups-work-on-JetBlue