structural:reformatting, information:filtering, linguistic:paraphrasing
Ross (2005)

Ross does not use specialized terms for different levels of classification as Donald Laycock and Stephen Wurm did. In the list given here, the uncontroversial families that are accepted by Foley and other Papuanists and that are the building blocks of Ross's TNG are printed in boldface. Language isolates are printed in italics.

Ross removed about 100 languages from Wurm's proposal, and only tentatively retained a few dozen more, but in one instance he added a language, the isolate Porome.

Ross did not have sufficient evidence to classify all Papuan groups. In addition, the classification is based on a single feature – shared pronouns, especially 1sg and 2sg – and thus is subject to false positives as well as to missing branches that have undergone significant sound changes, since he does not have the data to establish regular sound correspondences.

Although Ross based his classification on pronoun systems, many languages in New Guinea are too poorly documented for even this to work. Thus there are several isolates that were placed in TNG by Wurm but that cannot be addressed by Ross's classification. A few of them (Komyandaret, Samarokena, and maybe Kenati) have since been assigned to existing branches (or ex-branches) of TNG, whereas others (Massep, Momuna) continue to defy classification.

Ross removed 95 languages from TNG. These are small families with no pronouns in common with TNG languages, but that are typologically similar, perhaps due to long periods of contact with TNG languages.