There’s rhyme.
There’s alliteration.
There’s meter.
There’s homophones and heteronyms.
There’s puns.
And now perhaps there’s T9 mistakes. (linked for those of you less tech-savvy)
I don’t know what one could do with that idea…but perhaps it can be employed in some creative way?
Mistakes either engender opportunity or stagnation.
The main challenge I can see is signalling the play - puns are generally homophonic, but predictive text mistakes can be hard to pick up on. A friend of mine said that her mother was shocked to receive a text from her husband (friend’s father) saying “I’m leaving for good”. It turns out he’d meant to text “I’m leaving for home” - even given the signal of the medium used it’s not easy to divorce the right word from the context.
Yet in a way, divorcing the right word is exactly what the mother did. 
In response to the OP… I suppose the writer (when writing some poem… or fictional narrative heavy in characterization…) could use one word “textonym” in place of another word to suggest A) the written textonym represents a habitual thought or concern, and/or B) gives in illustration to how one feels about the other, unwritten textonymn (which the writer ought to make clear with a context that heavily suggests it)… how the character, or whatever perspective writing it, sees that word (how it is judged… how it is merely a sign of some larger thing, or whatever other possibilities).
Don’t know if I would place it with other kinds of “word play” listed though… their use would feel forced and uninspired, I imagine, for anyone but a rare few with an unusual arsenal of words, habitually “connected” in the brain to their textonymns. Even then, I’m not sure how often this “subjective highlight” (by a textonym) would make for a pleasant and coherent reading. Not only because so few readers will be able to “naturally” “sense” the textonym being replaced, but also because the used textonym may require too much unwritten context to give its use clarity.
Maybe it could make for very colorful communication between two identical twins with high functioning autism… beyond that I imagine it would only be done by a couple of high school nerds who are looking for a mentally stimulating way to boost their egos. I think “word play”, in the examples you use, are usually just devices that nicely color or dramaticize a bigger picture for which the writing is being done… this would just feel like doing it for the sake of doing it.
For example… given (from wikipedia), 4663 matches “good”, “home”, “gone”, “hood”,
"Her OCD led her to fixate on the unexpected, leading her to anxiously perceive anything but the basic essentials as filth-infested, illness-causing clutter. So, as much as she liked the gentleman, the first sight of his home put her in a panic. “That is not good,” she said, standing up and walking towards the door. “Maybe it’s just me, maybe it’s my problem, but I don’t know how you can live this way.” She closed the door.
He sat quietly for a moment. Then he zipped up his pants and turned on the tv.