Butterburr, mallow, coltsfoot, some of the dockens, and seaweeds can be very good too.
Best not be tempted by rhubarb or the hogweeds though, the rhubarb is poisonous and the sap from the hogweeds is an irritant.
There are loads more you can use though, you just get familiar with what's around you or what you've been taught to use.
cheers,
Toddy