The standard straight ISCG-05 chainguide doesn't fit the Specialized Stumpjumper 15 Comp Alloy as the shifter cable connection interferes with the chainguide. I designed this in Onshape for the 32T chainring.

Print in PLA or PETG. 4 walls and 10% infill should suffice for strength. Print laying flat. You have to manually paint some custom tree support for the offset. 

Note: It does not include the chain clip itself. You can design one or purchase online (https://www.aliexpress.com/item/1005003233711995.html?spm=a2g0o.order_list.order_list_main.10.41f01802bnOUVQ) or you can find a public design and print on OnShape (e.g. https://cad.onshape.com/documents/7f70839cdbdd11315e37d37d/w/ef1ebc178262aef16ae3e399/e/007dfe13d6f95f537fc3db50)

Design: https://cad.onshape.com/documents/d1e55a5f7fea03138e467213/w/e02ac18eba72625da42cebeb/e/6d42725dc9e5c37fa1021cdb?renderMode=0&uiState=6a19e91edd6e88ac9fbbd21e