Scott,
I posted a note on the Facebook group asking for a "donor friendly" insurance company and one person recommended working through a life insurance agent. That person should be able to find several alternatives for you to consider.
Another consideration is to have your creatinine checked again. It is notoriously volatile, and some means of measuring creatinine are more accurate than others. Consequently, you can't rely on the results from a single point in time. What is informative is what has been happening to the level over time. As an example, my level is slightly above normal (to be expected with one kidney) but it's been flat for 20 years. If an insurance company were to give me substandard rates or deny me coverage on the creatinine level alone, I personally would push back to show my kidney is just fine and is showing zero signs of deterioration.
Hope this helps.