I have tested Fedora IoT, Cloud, workstation on both ARM and x86_64, everything this testcase blocks on, and they all include chronyd.
The testcase doesn't suggest chronyd but crond. So which one are we talking about here? I tend to consider crond more important, and if we pick an alternative, I'd pick crond (if it's installed everywhere). I have no issues with replacing sshd in the testcase.
If you get to rewriting the testcase, can you please restructure it a bit as well? The Expected Results section is dumb, especially the "The expected results, in order, are:" part. You can't just follow step by step instructions, you have to constantly jump between How To Test and Expected Results and try to figure out what outcome is expected at that moment. Ideally, each step in How To Test should be clear about the expected outcome, so you can really go sequentially one by one and immediately know when something broke. The Expected Results section would only list those requirements which are not specific to particular steps but are valid overall for the whole test case, or it doesn't make sense to put them in How To Test for some other reason. I tried to use this approach in my latest testcase [1] (there was nothing to put in Expected Results, but the section mustn't be empty, so I used a somewhat unneeded sentence in there). Can you try something similar?
Thanks!