Once you assemble individual hexagon ring mattes and Text Arrays, simply animate text in any way you want. By offsetting keyframes and randomising values, you can create very complex animations, very quickly.
The key in creating Main Text assembly from parts, is to use multiple copies of Master Text layer at once. They should point to different mattes and have different scale values. To assemble the text, all those Master Text layers should animate towards one value and position. For example 20% Scale. This will give illusion of a build up, as the text will start settling down into 1 place.