Complex sentence: There were also several congregationalists, who favoured autonomy for individual local churches and whose core influential group was composed of Thomas Goodwin, Philip Nye, Sidrach Simpson, Jeremiah Burroughs, and William Bridge.
Split into simpler sentences: There were also several congregationalists, who favoured autonomy for individual local churches. Their must influential divides were Thomas Goodwin, Philip Nye, Sidrach Simpson, Jeremiah Burroughs, and William Bridge.