There is a lot of variation between different brands of RG58U coax. Some variants I've used are quite flexible and easy to manage. I don't know how those variants are for RF loss though, their loss may be higher, but the loss for just a few meters (patch cables) should be small well up into the GHz range if you use the right impedance connectors with the coax you pick and attach them properly. Different connectors vary a lot in quality. Also, some kinds of BNCs are 50 ohm, some 75 ohm.
SMA is better than BNC at UHF, and N connectors are superior to SMA.
The worst are the badly named "UHF" connectors. (PL259/SO238) They make lousy connectors at UHF.
The connectors are important. Attaching them properly is important. Badly attached cables cause a significant amount of loss at higher frequencies.
RG58 is pretty inexpensive. I have a lot of BNC patch cables made with RG58. They perform well and are reliable.
Many patch cables also use RG316 which is thinner but has a higher durability jacket, but is still flexible enough to work with. However, its thin enough to not be a great size match for many BNC connectors.
Its a better match to SMA. Also its much more expensive than you would think for its size. But its really good for short patch cables, its really the best choice for many RF applications.
Its loss is higher than Rg58 at higher frequencies, but not that high if the length is kept short.
RG174 is the cheapest and way too thin for the BNC connectors you pictured.
Its kind of fragile compared to the others. Its what you see in the cheap scope probes, etc. It can be less reliable because the wire in it is so thin.