the scientific understanding of human evolutionary history is subject to ongoing research, and new discoveries may have emerged since then. As of that time, there were two known hominin subspecies that interbred with anatomically modern humans (Homo sapiens) in the past:
Neanderthals (Homo neanderthalensis): Neanderthals were a close relative of Homo sapiens who lived in Europe and parts of Asia until around 40,000 years ago. Genetic evidence indicates that modern humans outside of Africa have traces of Neanderthal DNA, suggesting that there was interbreeding between Neanderthals and early Homo sapiens when they encountered each other.
Denisovans (Denisova hominins): Denisovans were another archaic human group known from genetic evidence found in a cave in Denisova, Siberia. They lived in Asia and interbred with both Neanderthals and early Homo sapiens. Modern humans of Asian descent, including many indigenous populations of Oceania, carry traces of Denisovan DNA.
Apart from Neanderthals and Denisovans, there have been instances of hominin species that coexisted with early Homo sapiens but were not necessarily directly absorbed or overcome through interbreeding:
Homo floresiensis: Also known as "the Hobbit," Homo floresiensis were a diminutive species that lived on the island of Flores, Indonesia. They coexisted with early modern humans and are believed to have gone extinct around 50,000 years ago. There is currently no direct evidence of interbreeding between Homo sapiens and Homo floresiensis.
Homo naledi: Homo naledi is another hominin species discovered in South Africa. Their relationship to Homo sapiens and the extent of their interactions remain subjects of ongoing research.
It's worth noting that the field of paleoanthropology is continually evolving, and new fossil discoveries, as well as advances in genetic analysis, may shed further light on our evolutionary history and the interactions between different hominin species. For the most up-to-date information, I recommend consulting the latest scientific literature and research publications in the field.