You might find ciabatta tricky to make, and I think that’s because the dough is so wet. You can’t knead it in the traditional sense, you can’t shape it in the traditional sense either, and that’s the beauty of it!
All sourdough starters have a history behind them. A romantic tale of travel across the globe and changing hands from generation to generation, it's all very lovely. Sometimes the origins of a starter are unclear and sometimes they even cause arguments! Fact is that your starter is unique to you, so start your own history.