Sidwell (2018) (quoted in Sidwell 2021) gives a more nested classification of Austroasiatic branches as suggested by his computational phylogenetic analysis of Austroasiatic languages using a 200-word list.
sˈɪdwɛl tˈuː θˈaʊzənd ˈeɪtiːn kwˈoʊɾᵻd ɪn sˈɪdwɛl tˈuː θˈaʊzənd twˈɛnti wˈʌn ɡˈɪvz ɐ mˈoːɹ nˈɛstᵻd klˌæsɪfɪkˈeɪʃən ʌv ˌɔːstɹoʊsɪˈæɾɪk bɹˈæntʃᵻz æz sədʒˈɛstᵻd baɪ hɪz kˌɑːmpjuːtˈeɪʃənəl fˌaɪloʊdʒnˈɛɾɪk ɐnˈæləsˌɪs ʌv ˌɔːstɹoʊsɪˈæɾɪk lˈæŋɡwɪdʒᵻz jˈuːzɪŋ ɐ tˈuːhˈʌndɹɪdwˈɜːd lˈɪst.