Yes, some manufacturers also provide 75 ohm RG174 cable. The RG174 cable provided by NanoVNA-H is 50 ohm. I have checked the parameters of RG174 and RG316 cables. They are not ideal at 1 GHz. Obviously it would be better to use RG405 or RG142, but they are too hard and not suitable for portable devices. If you use it in the lab, I recommend using RG405 or RG142 cable.
hugen
