* SLS (NASA) - operational (for Artemis missions only).
* Electron (Rocket Lab) - operational.
* Vulcan Centaur (ULA) - return to flight scheduled for November 2026.
* New Glenn (Blue Origin) - return to flight scheduled for December 2026.
* Antares 300 (Northrop Grumman) - under development, first flight NET 2027.
* Terran R (Relativity Space) - under development, first flight end of 2026(?).
* Neutron (Rocket Lab) - under development, first flight NET 2027.
* Firefly Alpha Block II (Firefly Aerospace) - under development, first flight Q1 2027
* Nova (Stoke Space) - under development, first flight NET 2027
And the issue is that many of these are booked out and have backlog. So even when they return to flight, its years before they can take on new contract.
And many of them can't fly many of the required missions for NASA or DoD anyway.
Nova has already been renamed Nova Pathfinder and is likely only going to be flown a few times before they will switch to a larger rocket.