Jade's World

From Terminator Wiki

Jade's World is a timeline created by both the intervention of the Connors against Cyberdyne in 1995 and the later deaths of the Connors in 2007 in another attempt to prevent the creation of Skynet.

The War Against The Machines in this timeline is perhaps the most dire, as Skynet was more advanced and capable in this world as compared to its counterparts on different timelines. For example, in this timeline Skynet was activated in 2007 but didn't become self-aware until 2021, by which time it had almost complete control of the US military.