Monograms could be of several types. But the prominent monogram designers and makers categorize it in two types.
They are – block monograms and center initial.
Let me explain. You know, in a broad sense, monograms are available in different sizes, types and categories. But the block monograms are those where the fonts or letters are of the same size.
Alternatively, there is another type where the center of the letters is larger and the others are smaller. This is the other type that is widely used.
Generally, the block monograms are for private use. If you are a person and need a monogram, you will have the block monogram. But if you are a business owner and want one for your business, you need the second type.