Hi there! While I don’t know of any strains in particular that will stimulate your appetite without getting high, here are some suggested strains that do help with appetite stimulation: https://www.hellomd.com/answers/58102d6a468bbf000bc06a8e/what-are-the-best-strains-for-boosting-your-appetite
If you want to avoid getting high, look for strains that have a lower THC concentration. "Low THC concentrations have been found to be more stimulating than higher concentrated, more psychoactive mixtures. Oral administration may be the most effective form of delivery for cannabis products intended to stimulate the appetite. It provides a faster means of delivery since it’s rapidly absorbed through the tissues of the mouth, and edible products such as cannabis-infused lollipops can be the easiest means of administration for those who have difficulty ingesting solid food." You can read more on that here: https://www.hellomd.com/health-wellness/55b14a863330370006050000/loss-of-appetite-from-cancer
I hope that helps!