Yes, there is life insurance plan that will cover someone who had a stroke and has diabetes.
Since your stroke occurred more than 2 years ago, there are some simplified issue life insurance policies that you can get, as long as you can do all your own ADL's (activities of daily living).
If you are unable to bathe, dress, etc. on your own, there are guaranteed issue life insurance policies that you can get if you meet the age requirements for approval. Usually, guaranteed issue plans provide guaranteed acceptance for people ages 45 to 75, or higher. However, these plans provide limited death benefits the first 2 years you are insured.
Here's how you can learn more about life insurance for people with health issues.