It's not obvious to me why that would be uncontroversial, as it's making an assumption about the taxonomic affinities of a form with no official description. Why are you so confident that the Palawan Cuckoo-Dove is part of one particular species versus another?
As for the full list, as of 2021 it's these 40 species. At least a few of these have been officially described since then - the "San Pedro" Tanager (now Inti Tanager), the New Caledonian Storm-Petrel, and (if I'm remembering correctly) the Meratus birds.
Palawan Cuckoo-Dove (undescribed form)
Timor Nightjar (undescribed form)
Great Nicobar Crake (undescribed form)
New Caledonian Storm-Petrel (undescribed form)
Gough Prion (undescribed form)
Lava Petrel (undescribed form)
Elgin Buzzard (undescribed form)
Principe Scops-Owl (undescribed form)
San Isidro Owl (undescribed form)
White-spotted Boobook (undescribed form)
Inirida Antshrike (undescribed form)
Inambari-Tambopata Antwren (undescribed form)
Loreto Antwren (undescribed form)
Aripuana Antbird (undescribed form)
Cali Antpitta (undescribed form)
Lambayeque Tapaculo (undescribed form)
Ayacucho Tapaculo (undescribed form)
Yungas Woodcreeper (undescribed form)
Bahia Treehunter (undescribed form)
Mantaro Thornbird (undescribed form)
Araguaia River Spinetail (undescribed form)
Amazonian Spinetail (undescribed form)
Mantaro Spinetail (undescribed form)
Maranhao-Piaui Pygmy-Tyrant (undescribed form)
Orinoco Wagtail-Tyrant (undescribed form)
Bacan Drongo (undescribed form)
Bismarck Flyrobin (undescribed form)
Banggai Leaf Warbler (undescribed form)
Taliabu Leaf Warbler (undescribed form)
Selayar Leaf Warbler (undescribed form)
Meratus White-eye (undescribed form)
Wangi-Wangi White-eye (undescribed form)
Obi White-eye (undescribed form)
Mantaro Wren (undescribed form)
Meratus Jungle-Flycatcher (undescribed form)
Togian Jungle-Flycatcher (undescribed form)
Mindanao Shortwing (undescribed form)
Mount Mutis Parrotfinch (undescribed form)
San Pedro Tanager (undescribed form)
Ibera Seedeater (undescribed form)