Points found in an archaeological site which has been scientifically excavated are the only valid types. The first person to name and PUBLISH a point type creates the only name that the type should be called. A type is always driven by cultural association at a specific time and place. Generally, those with only one or two references are considered conditional types and need archeological proofs for their certainty.
Has anyone seen anything in the archaeological literature on the Eagle Lake type........or the San Jacinto ?

Good call. Too many collectors and sellers of artifacts are creating point classifications for their own purposes. Refer to Dr. Hester's book to assist in the identification your finds, and use Overstreet to look at the pretty pictures, but nothing more.