Have you considered the following. Ukraine has experienced weapons designers. And the have upgraded their cruise surface to surface weapons. Did the US love to see Ukraine become independent in this weapon type and increased production to 40 units per month? So less dealing with US congress and more effective for Ukraine. You know that SW can provide technical modules you can “plug” into weapons systems. Also moving a few hundred components to Ukraine production lines would be high leverage.
I don’t know if the US has a really inexpensive but high leverage program to speed up Ukraine weapons development and production ramp. However, if I were looking for the most bang for my US dollar that would be my highest priority program to boost Ukraine long range, accurate and hard to defend weapons. Much more effective than permissions for weapons systems and shipping those weapons.