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The AI one is "Unparalleled Path - Reincarnated as the AI for a Space Battleship" (translation seems to be dead, though) and the comedic misunderstanding one is "I'm the Evil Lord of an Intergalactic Empire!"

There's actually two with English fan translation, one being a reincarnation as a spaceship's AI and another (a misunderstanding/comedy one) reincarnating as a noble ruling a poor planetary system. There's some more in Narou that I remember seeing, but as the author of latter states, SciFi...