You will need a system that can "sync" between JIRA systems. There are none built into JIRA, so you will need to write one for yourself, or better, have a look in the marketplace for add-ons to handle it.
https://marketplace.atlassian.com/search?product=jira&query=synchronize will get you a list, but you will want to narrow it down more (as it's showing things other than jira to jira)
I have multiple projects that use variations of the same base workflow. The variations depend on the requirements of the project or issue type. The variations mostly come in the form of new statuses ...
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