Keep this in mind: You only need to care about what is your goal, and which font is good for extending your goal, for logo making, product branding, web designing, or something else. There are also some sub-fonts in the 4 main font types and you don't need to know what is each font used for.
It doesn't matter that you don't know how to identify the differences between the above 4 types of Sans Serif font.
Sans Serif is an opposite font type that looks more futuristic and modern compared with Serif font.
Here are some famous brands with their logos that use Sans Serif fonts:
Thanks to its clarity, legibility, and simplicity, Sans Serif font stands out in logo making, branding, printing, and even web designing fields. Sans-serif, also known as Sans Serif, a typeface without serif, is dominated by geometric lines, straight lines, sharp corners, with merely no changes in thick lines.