Differentiating Strawberry Plants?

I've only been able to split june and ever-bearers by their fruiting habits - is the only way I've ever managed.

But as for splitting the varieties within, I have no idea and would be interested if there was a way.

I started out with different varieties but after potting up all the runners over the years I now have no idea what they all are. All that matters to me is that I get good fruit over a long period.