You have front racks which are low ride, mid-ride and platform. Off roaders prefer a higher mount. Platforms are useful for desert explorers, for carrying jerrycans.
Some racks come in 2 separate parts, one for each side. Others have a connecting loop which adds greatly to stiffness. Even if you have suitable fork eyelets for separates, hoop style is better.
Tubus Tara is a popular, minimalist, strong, stiff rack. Mounting hardware for forks lacking eyelets is available.
Modern panniers hook onto racks using quick-release locking mechanisms such as Rixen and Kaul, Ortleib. Non-locking hooks, velcro, hook and elastic and nylon straps are obsolete.