What is the least powerful DBS character capable of defeating Gogeta SSJ4 (DBGT) and Vegetto SSJ4 (DBGT)?

[SIAD]

What is the least powerful DBS character capable of defeating Gogeta SSJ4 (DBGT) and Vegetto SSJ4 (DBGT)?

I have Merged Zamasu and Goku SSJB (Peak Arc Zamasu) beating Gogeta SSJ4.

I have Goku SSJB Kaioken x10 (Peak Arc Zamasu) matching Vegetto SSJ4. Therefore, I would say Goku SSJB (Peak vs. Kefla).

 

[GSM123]

RoF or U6 SSJB Goku for me.