“Several trunks grow from one root; it creates a feeling of a quiet grove and has a soft, lyrical quality about it.”
One classification of multiple trunk styling is defined as all trunks growing from a common root system. There are many variations, and combinations, to this style. One of those being Clump Style. This is a fun style to try and common nursery stock can be a good source to get started. Read the attached article for more detail and suggestions to get started.