The type of tissue that can be found in your spleen is the reticular connective tissue. It is a network of reticular fibers that are made of type III collagen which supports the splenic pulp.

Its red color is due to the presence of blood. And, it is made up of thin-walled blood vessels, sinusoids, and thin plates of cells that lie between sinuses.

Source:
Grossi, C. E., & Lydyard, P. M. (1998). Spleen (2nd ed.). Amsterdam University Press. https://doi.org/10.1006/rwei.1999.0557

Your adipose tissue is found all over the body. It is commonly known as body fat. It is a specialized type of connective tissue that consists of lipid-rich cells called adipocytes. White adipose tissue is found in adults while brown adipose tissue is mainly in newborns.

Its purpose is to store energy, thermal isolation, cushion the organs, and thermogenesis.

The adipose tissue has two compartments: subcutaneous fat and visceral fat. The subcutaneous fat is embedded in the connective tissue under the skin. Meanwhile, visceral fat surrounds the internal organs like eyeballs or kidneys.

Source:
Vasković, J., MD. (2022, March 16). Adipose tissue. Kenhub. https://www.kenhub.com/en/library/anatomy/adipose-tissue

The elastic cartilage is one of the three types of cartilage in the connective tissue. Sometimes, it is referred to as yellow fibrocartilage due to its yellow appearance. It provides both strength and elasticity. It consists of chondrocytes and cartilage matrix. The matrix comprises of type II collagen and elastic fibers or lamellae.

One of the organs with elastic cartilage is your ears. This type of cartilage is also found in the epiglottis.

Source:
BSc, R. M. B. (2022, February 16). Elastic cartilage histology. Kenhub. https://www.kenhub.com/en/library/anatomy/histology-of-elastic-cartilage