I'm not quite sure what you are asking. Are you concerned with foods or soils? Are you asking for different foods that are either alkaline or acid?
Since this is not my area of expertise, I searched Google under the key words "acid alkaline types" to get these possible sources:
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In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search.
I hope this helps. Thanks for asking.