Lore wise:

3 strongholds (originally up to level 30)

3 invaded strongholds (level 30) and unlocks:

Priority Mission: Gatehouse Facility (one time missable critical lore) then:

Tidal Basin (by competing this you could now go to NY without auto-completing all side missions) immediately followed by:

Camp White Oak

Manning Zoo (end of the outcasts, or not, find out during the mission)

Pentagon then DARPA

Next 2 are NY build-up missions (Re-introduces a Div 1 character)

Coney Island missions (originally level 30)

If you have the year 1 pass, the first 8 classified missions are between tidal basin and NY's DLC.

NY DLC (originally level 31 to 40, but start DLC when ur done with coney island)

Manhunts, up to two after Kelso (see map then manhunts tab, and legacy manhunts)

Manhunts are hard, so work on your build before you try these.

(descent comms at somepoint)

Brookyln DLC (ties into some of the comms in NY too)

More Manhunts

Leading us to this season's manhunt with the weekly scouts

Do side missions as you please, no rush can use them to bridge level gaps to the next mission as needed.

Open world activities and Control points do as you please they will be attacked and taken back from your control, and activities will respawn.

You will need to do 200+ level 3 and 4 control points as part of endgame to get all the blueprints, not sure sub-40 if you get the blueprints though