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How would you model this piece of geometry with clean topology/shading like the example below?

enter image description here

I keep getting strange shading artifacts around the edges and I cant get the seam between the insets sharper without more shading issues:

enter image description here

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    $\begingroup$ It would be helpful if you added a closeup screenshot of the problem topology to your ask. Also it can be a good idea to post your blend file, or a truncated version of it that has the problem. The Blender StackExchange has its own service to share blend files: blend-exchange.com/help $\endgroup$
    – KickAir8p
    Apr 19, 2022 at 3:42

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You can do it this way:

  • Create a circle, cut its half, mirror, extrude:

enter image description here

  • Fill the faces, extrude outwards:

enter image description here

  • Inset these faces, press B for boundary so that the inset sticks to the mirror:

enter image description here

  • Extrude on Z:

enter image description here

  • Give it an Array modifier and a Simple Deform modifier (Bend mode and 360° on Z):

enter image description here

  • Give it a Subdivision Surface modifier:

enter image description here

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