Question about link two types of data in wordpress

I hope you have already created custom post types for Architects and Projects. In order to make a relation between them you may follow any of the methods below:
a.) Using ACF:

  1. https://www.advancedcustomfields.com/resources/bidirectional-relationships/

b.) Using Toolset:

  1. https://toolset.com/2018/07/how-to-create-post-relationships-between-your-custom-post-types-and-how-to-display-them/

c.) Using Posts to Posts plugin (Use it at your own risk as the plugin hasn’t been tested with the latest 3 major releases of WordPress)

  1. https://wordpress.org/plugins/posts-to-posts/

d.) Using metabox code by user @vmassuchetto

How do I create a relationship between two custom post types?

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