Certainly! For a Green and White (Selesnya) Commander deck focused on gaining life and +1/+1 counters, a fantastic choice of commander is **Tuvasa the Sunlit**. While Tuvasa is technically a blue-green commander, there are more than enough powerful mono-green and white cards available that could focus on those themes.
However, for an explicitly Green and White commander that fits the theme better, consider **Ghave, Guru of Spores**. Ghave is a