Homo Heidelbergensis
During the time, the spreading out of Homo erectus had been wired with a string of some descendant species. One of the species was Homo heidelbergensis. It followed the Homo erectus out of Africa. It mostly went west and produced what we call now the Neanderthals. Also, there was a species named Homo heidelbergensis, who remained in Africa and eventually led to modern humans. For those in Asia, it was called the Denisovans, which was another similar species. The discovery was due to few remains and DNA shreds of evidence.
Modern Human
About 130,000 years ago, the world was assumed to have several species of Hominins living and wandering. But later on, that changed when the Homo sapiens, known as modern humans, eventually left Africa. Everywhere it went, the Homo sapiens then pushed out the other hominins and followed them where they went. This whole process surely took time, and if we would observe now, we will see that the process involved some blending of several species producing additional types of species. It was evident in how the species looked.