Retrieving fields of a certain type

Hi, I'd just like to ask how I could identify which fields are of a certain type. The fields could be an array of that certain type or could be buried inside a serialized class. My concern is that I don't have any idea how I can check on what sort of elements an array takes without hardcoding for each script whose fields I check. I currently have a SerializedObject whose SerializedProperties I'm iterating through, but that's about the extent of what I know. Any ideas would be greatly appreciated. Thanks!