Connective tissue proper
Loose (areolar) connective tissue – highly cellular with a sparse, random arrangement of collagen fibers (and some elastic fibers)
Dense connective tissue – collagen fibers with little ground substance
Dense regular connective tissue – collagen fibers oriented in the same direction
Dense irregular connective tissue – collagen fibers woven in multiple directions
Specialized connective tissues
Adipose tissue – storage of fats in adipocytes (more cells than extracellular matrix)
Cartilage – extracellular matrix of type II collagen fibers and a highly-hydrated ground substance
Bone – calcified extracellular matrix
Blood – fluid matrix containing cells
Embryonic connective tissue
Mesenchyme – forms connective tissue between developing organs
Mucous connective tissue – found in the umbilical cord

from: https://histologyguide.com/figure-view/fig-024-connective-tissue/03-figure-1.html?x=6359&y=3516&z=8.9