you need to check "system data types" directory and it contents. Its default location in SQL Developer is sqldeveloper\sqldeveloper\extensions\oracle.datamodeler\types
Check "Preferences>Data Modeler>Default system data types directory" setting. If it's empty then copy defaultdomains.xml from previous installation to directory above.
If it's not empty then you need to copy types.xml and defaultRDBMSSites.xml from default location to directory set as "Default system data types directory".