In Osaka for first time. Looking for places to buy dried ingredients like shitake mushroom, anchovies etc.

Hello, first time in Japan and having a blast! I'd like to bring some dried foods like shitame mushroom, anchovies, soy sauce, etc to make an amazing dashi broth.

Do most local supermarkets have these things, or are there specialty stores that carry these items? Any recommendations?

Thanks in advance!