Oliver Twist is given his name by Mr Bumble, the prosaic beadle at the workhouse according to an alphabetical system. What it emphasises is the insignificance of Oliver within a long list of other insignificant (notably nameless in the novel!) workhouse boys.
Don't forget too that the concept of a "Twist" might well be seen to represent the many twists and turns of the plot of Dickens' novel: one often cited as an example of Dickens' preference for a cliffhanger at the end of every chapter!
Oliver Twist was named according to an alphabetical system used to name orphans but the name is actually a play on words. Oliver Twist is, in fact, "all of a twist". Although born in a poorhouse, he really has an aristocratic background that is revealed at the end of the novel. But despite all the hardships he faces, he remains very kind-hearted, an unusual "twist" on the hard luck stories of many children who came out of the poorhouse system.
mr bumble named oliver as orphans in workhouse was named in alphabetical order. the last one was a s.swabble, then oliver was t.twist.