Every baby is differant.
Mine loved sophie (or bob as it was called in our house) and its still sitting on the shelf in his bedroom because he wants to give it to his baby brother
Other things he liked where the rings from poundland but hated the fridge ones.
The gum shaped ones that you put the gel on he just sucked the gell of and thrrw away the teether.
Be carfull letting them chew om a adverage dummy as the material is not made for this and split easily and become a chiking hazzerd.
Its advised to take them away or replace often if they start chewing on them.
If you want to go for somthing more natural look into amber teething neclaces, not everyone likes the look of them though.
They dont actualy chew on it but wear it, the warmth of the skin makes it realease Succinic acid which is a natural mineral from the tree sap amber is made from and has been used for anti imflammatery purposes for thousands of years.
It eases the pain of teething and is worth reading up about.
It has alot of high reccomendation and success.