, I do not currently have access to Jensen's Kris Disc, and I am not looking at his photos, I have been looking at my own photos which are much more detailed and supported by notes on the various features of each keris I examined.
I prefer not to comment on Jensen's use of photographs.
keris terminology can be very confusing. Spellings for the same word can vary, and the words themselves are seldom carved in stone. This link may assist a little:-
In respect of the attitudes of museums, I prefer not to comment, except to say that many people do share your opinion.
On the other hand, I have always found museum staffs very obliging in making items held by them available for examination.
I'm afraid I am not able to draw sufficiently well to demonstrate the very, very tiny differences in various keris that permit us to assign one classification or another.