Question

Where is the Oort Cloud located and what do we believe comes from it?

Answer 1

The Oort Cloud is believed to be a giant spherical shell surrounding the Sun, planets, and Kuiper Belt Objects.

Explanation:

The Oort Cloud is lies far beyond Pluto and the most distant edges of the Kuiper Belt. While the planets of our solar system orbit in a flat plane, the Oort Cloud is believed to be a giant spherical shell surrounding the Sun, planets, and Kuiper Belt Objects. It is like a big, thick bubble around our solar system. The Oort Cloud's icy bodies can be as large as mountains — and sometimes larger.

Graphical representation and more information:
https://solarsystem.nasa.gov/planets/oort/

The Oort Cloud is a theoretical spherical cloud of predominantly icy planetesimals that is believed to surround the Sun at a distance of up to around 100,000 AU (2 ly). This places it in interstellar space, beyond the Sun’s Heliosphere where it defines the cosmological boundary between the Solar System and the region of the Sun’s gravitational dominance.

A great graphical representation of its location is here:
https://www.universetoday.com/32522/oort-cloud/

The inner limits of the Oort Cloud begin at about 2,000 AU from the Sun. The cloud itself stretches out almost a quarter of the way to the nearest star, Proxima Centauri. It is spherically shaped and consists of an outer cloud and a torus (doughnut-shaped) inner cloud.
3-D type graphic here:
https://space-facts.com/oort-cloud/