Versions in Jira are restricted to a per project basis. But I understand the desire to unify versions between projects. This kind of request has been asked before here on community. I would recommend checking out this thread: https://community.atlassian.com/t5/Jira-questions/How-do-you-share-versions-among-multiple-projects-in-Jira/qaq-p/200779
There are a couple of different possible solutions mentioned there in regards to different 3rd party addons that could be used to synchronize version names between projects.
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