The following attributes can be specified in a search when the art kind is set to Group:
Whether the group is a clip group (also called a clipping set).
FindReplace Art Group Clipping Controls
The level to which the group is nested. For example, a group inside another group would have a depth of 2. Groups in Illustrator are limited to a depth of 28.
FindReplace Art Group Depth Controls
The size of the group; i.e., the number of immediate child members that it contains. If one of the children is another group, the size of that group is not carried up to the top-level group. In other words, a group which consists of two paths plus a group always has a size of 3, regardless of the number of children in the nested group.
FindReplace Art Group Size Controls
The kind of art contained in the group, either as immediate child members or in nested groups. You can specify that the group members need to include the kind, do not include it, or are all composed of that kind.
FindReplace Art Group Members Controls