Sharepoint Online Content Search Display Templates missing

I'm experimenting Content Search web parts in a number of Site Collections, but appear to be getting different Display Templates available.

Can anyone explain what controls the availability of the templates please...

Our Default root site collection. http://ift.tt/1I6VMiC

Has Web part controls of List & Slideshow
And Item Templates of Large Picture, Picture on left 3 lines, Recommended Items & Video

All other site collections http://ift.tt/1KgxHn3

Has Web part controls of List & Slideshow PLUS List with Paging

And Item Templates of Large Picture, Picture on left 3 lines, Recommended Items & Video PLUS Diagnostic, Picture on Top 3 Lines bottom, & Two Lines

I've compared site and collection features and cannot see any features that would appear to control this...

Any ideas.... Please!

Cheers

Russ