Harmony type

[Ray]

I believe harmony type is the same on Genos as 809, my query relates to the harmony section, just the keyboard, no voice or singing (vocal). Referring to the many organ voices, (one of my favourites is  Theatre  Open Tibias.) using one finger, one achieves the fuller organ sound. My query is this, I can not notice any difference in sound between a couple of parameters on the a Keyboard harmony setting, in particular , type,  between. 4way close, Block and 4  way close 3 , and 4 way close . Reading the note configuration above these settings, the notes are exactly the same order. I would appreciate any help with this, and wonder why these few settings all sound the same. Many thanks, Ray.