... some of the ultrasonic cleaners I see advertise no rinsing is necessary. I suppose with a flow agent, the cleaning solution should sheet right off. Maybe a chemist here can explain ...
I've always rinsed an LP after using a cleaner, and then dried it on the OG Nitty Gritty machine I bought decades ago. But that's only for records bought used that require that degree of attention - which is uncommon for me.
The issue I have with LPs is just common dust. That requires no cleaning agent at all, ime. I use just distilled water in a Klaudio ultrasonic machine, insert the disc, push one button, and the machine washes and dries the LP automagically. It's so-oooo simple.