Whether organic or inorganic, soil behaves in a certain way when you try to clean it:
Soluble contaminants dissolve in water, for example sugar, salt and detergent powder. Because they dissolve, they are generally easy to deal with. It is common where food is sold, prepared or consumed such as cafes, school dining rooms and hospital kitchens.
You are most likely to come across insoluble contaminants; these won’t dissolve in water so will need detergent to remove them. Examples include oil and skin, so they are found in many environments, including kitchens and wet environments.
Insoluble soil can be greasy or particulate:
Greasy contaminants stick to surfaces and smear when touched. Examples are oil, fat and grease. This is likely anywhere food is present but also, as vehicles leave behind oil and grease, it will regularly be carried on foot into communal areas.
Particulate contaminants are powdery, examples being sand, skin, washing powder and broken fibres, so they will be found in a wide range of environments.
It is very likely that you will find greasy and particulate contaminants together as the powdery soil will stick to any grease it comes into contact with.
Abrasive soil may scratch a surface, for example, glass.
Stubborn/tacky contaminants may stick to a surface, for example, syrup, wax or glue.
So, materials belong to more than one of the categories, as one is what it is made of and the other is how it behaves: salt spilt from a container is an inorganic, particulate soil which can be swept, or vacuumed, up; salt spilt onto a wet surface is an inorganic, soluble soil that can be washed away.