@bobkmertz @will6789 Zierer definitely built Lisebergbanan, so it wouldn’t surprise me that there are others. I know Lisebergbanan was Anton’s design (and by all accounts, one of his favourite coasters), he just worked with Zierer to build rides once his own company had folded.

Like you, I lose track of who did what in the aftermath, and am never sure who is providing what services these days.