like; such as~
Lists examples of a category, meaning 'such as' or 'like'.
This pattern introduces examples that represent a larger category. It is similar to のような but is more formal and often used when giving a few specific instances to illustrate a general point. It can be used with a single noun or a list, and the noun before といった is the example, while the noun after is the category. For instance, 東京といった大都市 means 'big cities like Tokyo'. It is common in written Japanese, news, and formal speeches, but can also be used in everyday conversation when wanting to sound a bit more articulate.