Straight-legged types work well in certain setups. They show up in 5G base stations and satellite communication systems. You see them connecting antennas to radio frequency equipment too. Spectrum analyzers and signal generators often use them as well.
Angled versions fit into more compact spaces. They handle internal connections for smart communication devices. IoT sensors rely on them quite a bit. Wi-Fi modules and in-vehicle communication systems make use of these too.
Offset designs serve specialized needs. They appear in special antenna arrays. Some medical imaging equipment incorporates them. Scientific research equipment benefits from this style. Military communication equipment tends to favor it for those reasons.