Classification of cameras, such as which SLR cameras are there and which ones are there?

Camera used to be called film machine, also called mechanical camera ~ traditional camera ~

Specific classification includes paraxial ~ SLR ~ double reverse ~ and professional back ~ ~ ~

There is also the fool machine that appeared later, which is the home machine ~

Now it's called a digital camera ~

There are also SLR, card, micro-single, single electricity ~ ~

Professional digital phones also appear on the back ~ ~

Of course, there are also some special professional cameras, such as frozen CCD cameras (I don't know whether they belong to the category of Machine North), and there are many ~ ~ Some people do their own DIY~ I don't know what their names are ~ ~ but they are basically the above categories ~