Mine makes clicking/clunking noises at slow speeds when braking, forward and reverse. It's the front calipers/pads. Just haven't been arsed to sort it yet.
Inner CV joints click under load, usually only when pulling away from a standstill - where the load is highest on them. Worse on hill starts.
Outer CV joints click/knock/jolt when cornering close to, or at, full lock.
A worn rack and pinion usually feels vague around centre and knocks over bumps. You can confirm by jacking it up, putting the steering on full lock and shaking the tie rod on the fully extended side violently. There should be no play. Repeat on the opposite side.