Regarding the strategic sealift vessel (you may know it as a LPD), a modified version of this design is being offered by an Indonesian firm for the real life Philippine Navy Strategic Sealift Vessel requirement:
It is very similar to the Damen Enforcer 13000 LPD:
I will base the strategic sealift vessel in my AU on the Enforcer 13000, but with a stretched hangar (with the loss of 1 helicopter landing spot).