You can get significantly different extracts depending on the tek you use.
I found that using a non-specific solvent like toluene gets the most diversity of alkaloids out of plant material. Also the material you start with makes a big difference (MHRB/Acacia etc). NMT content can significantly affect you journey as well (can make it more intense emotionally, less visual etc). NMT is highly psychedelic contrary to what most ppl think, especially in a mix with DMT. Some Acacia species have a lot of NMT.
I once had a toluene extract that looked regular 'run of the mill' but was simply out of this world. Extreme jungle experience. I still don't know why...
Hexane/heptane for example tends to draw out more pure DMT from solution leaving a lot of diverse plant matter behind.
I stay away from Naphtha as what it consists of can vary by the region or even OEM.
Changa mixes with Caapi or Passion Flower can enhance the journey as well as they contain MAOI. And so on...
Since DMT is illegal pretty much anywhere there are a lot of unanswered questions. You can experiment a lot with your extraction methods and may come across something unique :-)
You would need to narrow down you question in order to touch down on any details.
Be inquisitive and always question things...