Here is another robot made for more advanced students and researchers. The LoCoBot WX250 is a rover for mapping, navigation, and manipulation tasks. It comes with a 6DOF manipulator and 2k payload. It lasts up to 90 minutes on battery.
The LoCoBot WX250 Rover measures 63cm tall and 35cm wide. It uses open source software. This rover has a open source Python API. It is built on the Create 3 robot powered by the Intel NUC NUC8i3BEH Core i3 processor.