I created the Altium library of most SInara HW blocks
https://github.com/sinara-hw/Sinara_HW_block_sch_library
one can quickly document complex, multi-level systems, including cabling, variants and all HW interfaces.
One can create BOMs out of it.
This library can be converted to Kicad, but it doesn't support variants and it's important feature that's why it's in Altium.
example block schematics
I created the Altium library of most SInara HW blocks https://github.com/sinara-hw/Sinara_HW_block_sch_library one can quickly document complex, multi-level systems, including cabling, variants and all HW interfaces. One can create BOMs out of it. This library can be converted to Kicad, but it doesn't support variants and it's important feature that's why it's in Altium. example block schematics