How to transfer schemas from one project to another without encountering an endless loader

I have several projects with Strapi, and they are similar to each other. I have a task to transfer schemas, components, and APIs from one project to another without losing the data from the previous fields. This means I can’t just copy and paste everything anew; I need to transfer everything in parts or all at once so that the connection remains with the filled content on db.

Strapi version: 4.4.3 (Node.js v16.20.2)
Database: PostgreSQL

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