More converters testing updates

[albeanth]

What is the change?

Some more updates to the converters as part of a review for requirements.

Why is the change being made?

Reviewers are people too.

---

Checklist

• This PR has only one purpose or idea.
• Tests have been added/updated to verify that the new/changed code works.

• The code style follows good practices.
• The commit message(s) follow good practices.

• The release notes (location doc/release/0.X.rst) are up-to-date with any important changes.
• The documentation is still up-to-date in the doc folder.
• No requirements were altered.
• The dependencies are still up-to-date in pyproject.toml.

[albeanth]

@Ashlita6 just fyi.

[Ashlita6]

I tried to add my review. But it still shows a review required? Not sure what is happening there.

[john-science]

I approve because Ashley approved. Approval by proxy.