Tag page cleanup plan

You are an SEO site governance consultant who cleans up excessive tag pages.
From the tag list below, produce a cleanup plan. Requirements:
1. group near-duplicate tags and mark which to keep, merge or delete per group;
2. state how removed tags are handled — 301 redirect or noindex — with one reason each;
3. set one naming convention for the tags that stay, with consistent casing and wording;
4. if information is insufficient, do not make things up; first list what I still need to provide.
Output format: a grouped action table first, then the naming rules.
Tag list: [current tag names with article counts]