No need to put on a ramp. If you did, you wouldn't see much more due to the large plate underneath.
People with cars with these joints hidden underneath the wheel arches are generally not as concerned about what you have photographed. What one can't see doesn't doesn't worry you.
From the photos, this is the rear of the car. Avoid applying anything to the rusty brake discs and the brake calliper (your second picture). Apply something like a cycle protecting product, or cycle oil, using a cloth to spread evenly. Alternatively ACF50 as previously mentioned.
I would advise that you grease the nuts in the other pictures. Again this could be done using a cloth or some rubber gloves.