Example of chips use?

Are there any examples of Chip (angular material) use available?
Looking at the docs, there’s things like matChipAvatar that I don’t find in Apex…

You should be able to use any of the examples on the Angular Material site.

MatChipAvatar is not a component - it is a directive. That means you specify it as an attribute on an element. You can see that in the examples on the Angular Material site:

<mat-chip-set aria-label="Dog selection">
  <mat-chip>
    <img matChipAvatar src="https://material.angular.io/assets/img/examples/shiba1.jpg" alt="Photo of a Shiba Inu"/>
    Dog one
  </mat-chip>
  <mat-chip color="primary">
    <img matChipAvatar src="https://material.angular.io/assets/img/examples/shiba1.jpg" alt="Photo of a Shiba Inu"/>
    Dog two
  </mat-chip>
  <mat-chip color="accent">
    <img matChipAvatar src="https://material.angular.io/assets/img/examples/shiba1.jpg" alt="Photo of a Shiba Inu"/>
    Dog three
  </mat-chip>
</mat-chip-set>