The first pic is a ladybug nymph. Not sure what the other two pics are of. Look to be eggs of something. Usually, with insects, eggs laid in bunches are of a non-desirable bug. Typically, the predatory insects (e.g. ladybugs, syrphid flies, big-eyed bugs, etc.), lay singe eggs. The exception to that would be lepidoptera. The giant swallowtail lays singe eggs. Some object to swallowtail caterpillars on their citrus, I, on the other hand, revel in their presence as their damage is minimal and their beauty is great.
