Flaked Wheat
This cereal imparts more intense flavours than the malted wheat. Flaked wheat ensures a hazy beer.
Flaked Oat
The excess in beta-glucans results in haziness and a silky mouthfeel. It could also affect filtration, so you might want to add rice hulls.
Flaked Maize
Brewing with corn is best done by adding flakes. They have little protein and can be added directly to your mash.
Flaked Barley
These cereals will increase the volume of fermentable sugars, without adding much body or taste. Some haziness might occur.