Design Standards for multi-barbed hose fittings

Can someone respond with ISO, DIN, GM, etc. design standard for multi barbed hose fittings? A Nerac search turned up no industry standards for barbed hose fittings.

There is SAE J1231 & J1697 for single bead hose barb fitting.

However, I can't find a standard for multi-barbed hose fitting.

I am interested in dimensional specifications/standards for plastic injection molded design of barbed hose fittings, for custom engineered components, that need to be connected to fuel hoses, with & without a hose clamp. Over time our company has made fittings to various dimensions & different shaped barbs. Now I am trying to clean up designs & standardize to find a common dimensional design.

thanks for your input.

Here are examples: