The order and appearance of actions depend on the page and the loaded files.
get_search_form() for example fires an action 'get_search_form' and (oddly enough) also a filter 'get_search_form'. But if no search form is loaded the action will not be available.
The only way to really know which actions are available is to look at them on different pages. There is a magic action 'all' to hook into … well … all actions.
My plugin All Actions List does exactly this. It prints all actions found into the footer on the last action named 'shutdown' which is always available.
On the front page of a simple blog, there are ~2300 actions – including filters which may be used as actions too.
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