Both germinate quite easy.
https://www.qdma.com/cereal-rye-deer/
https://www.qdma.com/deer-prefer-awnless-wheat/
Rye is considered a cool-season annual cereal grain that germinates very quickly, is highly preferred by deer, and has excellent resistance to grazing pressure. In forage trials I helped conduct across Tennessee, rye consistently ranked second to oats when comparing deer selectivity of the different cereal grains. However, don't be overly concerned with how rye ranks among the other popular cereal grains, because deer prefer wheat, oats and rye. That is, you will not notice more or fewer deer using a plot of rye than you would a food plot planted in wheat or oats (unless you hunt up north and your oats get winter-killed!). However, there may be some advantages for you to use one over the other, depending on what you are trying to accomplish.