Mesa

Mesa is a very rare biome which is made up from red sand, cacti, dead bushes and plateaus. The red sand is only one layer thick. Red sand is found in the Mesa itself, not its variants. Water patches are found but are not a variant. Hardened clay is found, along with stained clay.

Mesa (Bryce) is a variant like the bryce canyon. This biome is in 99% of mesa biomes. This is made up of stained clay spikes sticking out from the ground.

Mesa Plateau is a biome with stained and hardened clay blocks pushed up together to make a neat plateau. Dead bushes still spawn here.

Mesa Plateau F is a variation which commonly spawns on the plateaus. The F stands for forest. This consists of dying small oak trees with coarse dirt and grass.

Mesa Plateau M is one of the rarest variants found in Minecraft. This is made up from random stained clay structures which are rarely floating.

Mesa Plateau F M is more common than mesa plateau M. It combines mesa plateau F and mesa plateau M. It isn't very plateau-like.