CMM Powerpoint Template Design

I need a modern and sleek Powerpoint template for a client presentation on the Capability Maturity Model (CMM). The template should primarily cover the "Stages of Maturity". It needs to be visually engaging while maintaining professionalism and clarity.

Ideal Skills:
- Powerpoint design
- Modern design aesthetics
- Corporate presentation experience

I need 2 slides - one with 4 stages of maturity and one with 5

As an example, here's a good model of a slide I'm after:

https://www.slideteam.net/digital-maturity-powerpoint-guide.html?utm_source=digital-maturity&utm_medium=video_sub&utm_campaign=youtube#images-1

Please include in your bid examples of similar corporate design work you've done.