When someone writes poetry that's almost like plain English sentences, what may we call that?
Consider this, for example. This is an example of that plain, stated as it is, poetry (completely made up):
I did this.
Then I did that
Life is great
Then I wore my pants
But life is also a struggle
and so on...
It gets tiresome after a while.
As against that, consider the more romantic prose. This is, as it should be, poetic.
If hopes were dupes, fears may be liars;
It may be, in yon smoke conceal'd,
Your comrades chase e'en now the fliers,
And, but for you, possess the field.
For while the tired waves, vainly breaking,
Seem here no painful inch to gain,
Far back, through creeks and inlets making,
Comes silent, flooding in, the main.