Logotypes, also known as wordmarks, are logos that are made up entirely of text. Since they rely on specific fonts and styles, they may not always fall into the public domain easily. However, there are a few examples of uncopyrighted logotypes that you can use:

• Generic fonts: Basic, widely-used fonts like Arial, Times New Roman, or Helvetica are not copyrighted and can be used freely in logotypes.

• Simple text arrangements: Basic arrangements of text, such as plain horizontal or vertical layouts, are generally not eligible for copyright protection.

• Historical fonts: Some historical fonts, particularly those created before copyright laws were established, may be in the public domain.

Please note that even though these logotypes may not be copyrighted, using them in a way that could be confused with an existing organization or brand could still be a legal issue.