Complex sentence: Moya Doherty and John McColgan, creators of "Riverdance", produced, with Edgar Dobie and Ronan Smith, of Doherty and McColgan's Riverdream production company, Executive Producers.
Split into simpler sentences: Moya Doherty and John McColgan, creators of "Riverdance", produced. Additionally, Edgar Dobie and Ronan Smith, of Doherty and McColgan's Riverdream production company, are listed as Executive Producers.