From what I have read traditional ayahuasca consists of caapi vine and chacruana. If this is traditional ayahuasca then doesn't this mean that THH and DMT N-Oxide are needed in order to create ayahuasca in the traditional sense?

Mimosa lacks DMT N-Oxide and syrian rue seeds don't have THH so doesn't this make mimosahuasca very different to ayahuasca?

To create traditional ayahuasca wouldn't it need to contain both chacruana and caapi vine and substituting chacruana with acacia or mimosa and/or substituting syrian rue seeds instead of caapi vine wouldn't be the same as traditional ayahuasca?

What does the presence of THH and DMT N-Oxide in addition to harmine, harmaline and DMT contribute to the ayahuasca brew?

Ayahuasca design not only the association of two plants but rather it's primordial constituant : banisteriopsis caapi.
So ayahuasca has to hold AT LEAST this very plant.
Anahuasca or otehr names have been designed to point out the emergence of other hamalas extract in hteir crude form associated with tryptamine, pharmahuasca in their less crude form, isolated or partially isolated alcaloids.
the most famous ayahuasca beverage contains, caapi and chacruna thought it is far to be the only one, yagé, can be used with or without many admixtures some of them are certainly unknown as of yet.
Chaliponga, chiricaspi (brunfelsia), toé (brugmansia), piri-piri (cyperus articulatus), guayasa to name a few are associated with caapi as an ayahuasca mixture.
Rue isn't a traditional way, it's more based on analogy than anything else.
Now speaking chemistry, everything is addding or substracting to the experience so the alcaloids present, a swell as other compounds, tannins, oxydes, freshness plays a role in different effets.
All I could throw in for now, safe brewing seraph, and tek care !

I would just add there is no holy grale in molecule like THH or dmt-oxyde or not, but rather to the work of intentions, interpretations and integrations that make it blissful or not.
Rue is a very valuative teacher as far as ethnobotanicals go, also mimosa tenuiflora..
The fact that they both haven't been used for too long together as an analog "hoasca" often give them a less trustfull aura. But are we issued from a traditionnal ayahuascero lineage either ?