The Clearwater Lights in California provides excellent auxiliary LED lights such as KRISTA and GLENDA lights. A set of both lights should easily cover all the requirements for a safe allroad touring in every condition. According to my experience a minimum requirement would be a pair of KRISTA lights, but a set of GLENDA would be even better.
The KRISTA is very bright auxiliary light which is designed for offroad use. Single GLENDA light has also three 12W LEDs with a wide light pattern. Therefore GLENDA lights can be used as regular fog lights and they are also dimmable. Read more here