All of the names below have been given to at least 5 American babies per year every year since 1900, without any sharp popularity peaks that would date them. These names are all over the style map but they're all timeless, and not a James or Elizabeth in the bunch.
Offbeat Nature Baby Names List for Boys and Girls. I have so many more, like the wonderful Moss. I'll have to do a sequel. :) (Yes, there are a few out-of-orders/repeats...since these are fun and free I know you understand)