Final answer:
AHS does not strictly manage certain taxa classifications due to gaps in knowledge or non-conformance with other categories.
Step-by-step explanation:
The classification type that is not strictly managed by AHS is Taxa that do not exactly meet the criteria for the other categories or have considerable gaps in knowledge about them. AHS, which stands for American Horticultural Society, primarily manages and classifies plants and gardening-related taxa. However, there may be certain taxa that fall outside the scope of AHS's management due to their unique characteristics or limited understanding.