Fungi:
* Mushrooms
* Molds
* Yeasts
Bacteria:
* E. coli
* Salmonella
* Lactobacillus
Other:
* Earthworms
* Millipedes
* Some types of insects (like dung beetles)
It's important to remember that decomposers break down dead organic matter, which includes plants, animals, and waste. They play a vital role in recycling nutrients back into the ecosystem.