How to get all gameObjects that is currently touching another gameObject without triggers.

So I want to call a method from a script on the gameObject to see all the gameObjects that are currently touching/colliding with it.
I can store all the gameObjects with onTriggerEnter/exit but it does not feel lite the best way.

I have thousands of gameObjects like this so I do not want them to have there own logic.
So if a do this I only have to check one gameObject and I'am only itrested in that gameObject. Imagine you're clicking on the gameObject an then the script checks the touching/colliding gameObjects.

Is there a way to do this?

 

If this is in 2D, you can use Collider2D.Cast to "Casts the Collider shape into the Scene starting at the Collider position ignoring the Collider itself."

There's no such method in 3D physics. If the collider has a known shape, you can use one of the overlap methods to check for overlaps, and then manually filter out the target collider. See Physics.OverlapBox for an example.

 

I work in 3D and thank you for the answer this seems to work fine =) have to check a little bit more.
[Update] It works perfect with OverlapBox!