Last year in one of my plots I planted Oats, Cereal Rye, Triticale and Wheat in strips about 10'x150'. I planted all the last week of August in MN.
In my experience they all grew at about the same rate (give or take slightly). The biggest difference was the deer crushed the 4-5" Oats completely to the dirt where ever they could find a bite, they did nearly the same with the rye but I but I believe the oats kept some of the pressure off the rye. The Triticate was next but very little had eaten it, and lastly the Wheat was the least desired.
This spring after our MN winter, the Oat areas was just eaten to the dirt so nothing existed there, the wheat greened up late but still nothing ate it. Tritacale was dead. The Rye was green as soon as the snow receded and the deer loved it. By planting time the rye was 30" tall and heading out.
On a side note... I did plant Triticale and peas in a separate plot about a mile away by itself and the deer did hit that pretty hard during September and early October... however im convinced that plot would have been devoured had I put it in Oats or Rye.
Thats my 2 pennies.
-SWIFFY-