A few Questions about some Products for Genesis Figures. (CLOSED)

Hello, I have a Question, what are these Products intended for? Do I absolutely need them when working with the Genesis 8 Figure, or should they be viewed more as Add-ons?
Product: https://www.daz3d.com/genesis-8-female-body-morphs, https://www.daz3d.com/genesis-8-female-head-morphs

Up until now, I had only used the Basic Product. (https://www.daz3d.com/genesis-8-starter-essentials)  What are these Products intended for?

Another Question concerns the Victoria 4 Figure. Are the Products mentioned above comparable to the Product for Victoria 4? The Base Victoria 4 Figure includes only a Handful of Morphs, whereas the Morph Product (https://www.daz3d.com/victoria-4-2-shapes) adds many more, is the same true for the Genesis Figure?

Those are pre-made body shapes for Genesis 8 figures. Do you absolutely need them? **No, not at all.**
What are they for? They're morphs that you can apply to the base figure if you want to change its overall shape or specific features, such as height, weight, body proportions, facial features, ears, and more.