extended range strings

Just bought my first extended range bass. Been playing for 30 years and wanted to try something new. Went with an Ibanez BTB805MS and it's amazing. It was exciting to try out a 37" scale bass until I needed new strings. Long story short, strings were hard to find. Did tons of research and Kalium...

Hey everybody! Was thinking of building an extended range bass for myself. Probably an 8 string, what I was wondering is if y'all knew of any companies that made strings for these monsters. I am aware of Kalium, Stringjoy, and octave4plus. Any others? Thanks