How much ancient Levantine ancestry do the Lebanese and Palestinians have? Do they have Arab ancestry? G25 analysis

If you think G25 is bad then see this: qpAdm vs G25 results

These Admixture models do not imply direct ancestry but they only show the genetic shifts towards these ancient DNA samples. Sometimes they can happen coincidentally through re-mixing with similar populations. 

The Global25 admixture charts you see below illustrate the percentage mixtures needed to get the closest match to a modern target when comparing their DNA to ancient DNA samples. In simpler terms, they show how much mixing of different ancient DNA samples is required to match the genetic profile of present-day populations. This doesn't necessarily imply a direct descent from the exact population depicted; it could instead be from a population closely related or similar to the one shown.

The North East Iranic score is perhaps from Graeco-Bactrian related people. Such admixture in the Levant appears in Hellenistic and Roman era DNA samples

G25 source populations: https://pastebin.com/vj0rc0xw