The two main asset types you will want to use are "Asset" and "Amazon Taggable Asset".
It is important that you follow these steps in order to ensure you capture all appropriate infrastructure into your perspective.
The first step will be to run the perspective group search with "Asset":
CloudHealth has created an asset gather tree for the majority of AWS infrastructure under the "Asset" asset type. This means that not only will taggable assets like EC2 instances be recognized and pulled in to the perspective groups, but also associated infrastructure that can't be tagged directly. Once these groups are recognized, pull them in to the perspective.
Since the "Asset" gather tree asset type is maintained by CloudHealth, there is a chance that it may not include all taggable assets available (generally newly released assets may not show up) so it's a best practice to run the process again using "Amazon Taggable Asset".
Within the same perspective, run the group search a second time using "Amazon Taggable Asset" as this is a direct feed from AWS:
The most likely result is that no additional groups appear but this extra step serves to ensure you have all taggable assets captured within the perspective you are building. If additional groups do appear, simply add or merge them in to the appropriate group within the perspective you are building.
For more information on how to build a perspective, see: How to Build a Perspective