If you’re working in a strict corporate environment, Gamma is my current go-to...

https://highstylife.com/copilot-for-powerpoint-vs-plus-ai-which-writes-better-slide-content/

If you’re working in a strict corporate environment, Gamma is my current go-to for speed. It handles the doc-to-slides conversion efficiently, but the real winner is how it manages the transition to PowerPoint