The proposals are characterized by the Wikipedia source as a bill, a constitutional amendment, a joint resolution, and an amendment proposal.
While the article makes no claim that these things are the same, or virtually the same, if it makes you feel better to believe that a proposed constitutional amendment, a constitutional amendment, a joint resolution of Congress, and a bill are all virtually the same thing, I say go for it.
Bless your heart."
Thanks, what a swell guy you are.
</sarcasm>