The question of using jades and suculents seems to generate some heat, particularly among "purists" (whatever that term means). I am with you, they do achieve the illusion of a small tree in a container. They are also very tolerant and easy to care for. Jades are my choice whenever I want to give a bonsai as a gift to any friend who is still affraid of trying to care for a plant.
The "pixar" effect of the leaves has to do with the fact they are fleshy and suculent.
They are not conifers but conifers are not my cup of tea anyway
Jorge