Hi AT,
Yes … sheets and pillows that are better at temperature regulation can certainly help with overall sleeping temperature.
The same general temperature regulation guidelines would apply for pillows as for mattresses. While I can’t make any specific suggestions for anything that you can “feel” because there are too many individual preferences involved and only your own experience can tell you whether any pillow works well for you … there is more information about choosing a pillow in the pillow topic here and the other topics it links to that should be helpful.
There is also more information about sheets and bedding in post #7 here and the other posts and sources of information it links to that should be helpful as well. Natural fabrics such as cotton, linen, or silk or “semi synthetic” fabrics such as viscose rayon (made from bamboo, beech and other viscose sources) will generally be better at regulating temperature than synthetic fabrics such as polyester. Linen and Silk in particular are very good at regulating temperature.
Phoenix