Include View In Node That References Other Nodes Based On Joined Field I'm getting a little confused trying to get this one, thought I'd get some help.

I have two content types (A and B) both with the same list field (My List). I want to include a view in content type A that finds all nodes of content type B with the same My List value.

I've looked through Context, Entity Reference (which I didn't really get) and Views Relationships and Contexts but couldn't make much sense of it.

What's the best way to accomplish this?

Edit:

I've added an image of my desired output (from actual site) and the current fields of content type's A and B.

An important note is that the Views block/whatever showing content type B needs to be shown in the normal node page of content type A.

I know this isn't the best way to do this, but this feature wasn't planned and the client just wants it to work as fast as possible

Content Types Fields:

I've excluded irrelevant fields such as path and meta tags.

Content type A:

Title - text
Body - HTML (w/ text inside)
Department - List


Content type B:

Title (name) - text
Description - text
Department - List


Desired Output:
Create a View to show nodes of Content Type B, add a Contextual Filter for your field My List and save the view.

Install the Views Field View module and then in the Footer region of your View of Content Type A add the  Global: View (Views field view) and configure under the View settings the Name and Display of your B View and the token for the Contextual filters. 

To use the value of the My List field as a token, you must have in the Fields of your view this field selected.

Edit after your comment ("I'd prefer to keep using the regular node page.")

You can use the EVA module, it provides a Views display plugin that allows the output of a View to be attached to the content of any Drupal entity, in your case the node of Type A. In the contextual filter of the view you need select the My List field in the Entity Content Settings of the View using a token.

"Entity Views Attach: Use Views Almost Anywhere" contains a great tutorial about it.