They all need feeding every day just like any other fish. Cories need more than just algae wafers; a food like Tetra Prima is good for them as well as occasional bloodworm etc. Are the "albino catfish" also cories? If so then diet is the same. As for plecos, many plecos are more inclined to meaty foods and some need driftwood in their diet so what to feed them depends on what species' of pleco they are.
The gold nugget absolutely MUST have bogwood in the tank as they need the lignin in the wood to digest food, the stripey one is most likely a carnivore and will need meaty foods. If you can post a pic I can try to ID it. The one you say is "normal" could be any of 50 or 60 species' so a pic of that will help too, but if it's a common pleco it will grow too big for your tank.
If it's black and white it's not a tiger plec, those are brown and yellow. You need to identify this "normal" plec - most that could be described as such are likely to grow to up to 2 feet long and need a very large tank. The label "common" pleco applies to a lot of different species, but all grow very big.