>>10224866They fulfill different niches, and while they mostly hololarp, their selection of content does vary more than Nijisanji and Hololive. They're basically indies but filtered through a process to at least be reliable enough to stream. Phase Connect has an odd-ball selection of streams, Cyberlive has non-standard selection of game choices, and Tsunderia hires people who have potential but are not necessarily good and hopes it pays off. I don't know much about Prism but Shiki's great.
But they also have their own weaknesses. Phase Connect, Amber Glow, and Cyberlive's specialization, and weirdness lean them toward a more 4chan-adjacent audience, which unironically attracts schizos and the usual problems any /here/chuubas encounter. Tsunderia, well, has an eye for talent and that leads to those same talents either getting poached with companies who can better support them, or go rogue and just around doing whatever. Prism is solid, and only if you think Prism=Shiki.