Answer 1

Not sure I quite understand the kind of "depth" you are looking for.

SVG vs Canvas:

https://www.sololearn.com/learn/HTML/2202/?ref=app

Comparison chart at the bottom of:

https://www.w3schools.com/html/html5_svg.asp

Reference:

https://www.w3schools.com/graphics/svg_reference.asp

SVG is the container and you can put SVG elements "inside".

Elements can be layered. Further reading:

https://www.w3.org/TR/SVG2/render.html#RenderingOrder

Answer 2

Understandable. Happy to help. 🙂