1. Baltic-Slavic
1.1. Baltic
1.1.1. Latvian (Lettish)
1.1.2. Lithuanian
1.1.2.1. considered the closest to PIE
1.1.3. Old Prussian
1.1.3.1. Dead lang.
1.2. Slavic
1.2.1. West Slavic (Eastern Europe)
1.2.1.1. Polish
1.2.1.2. Slovak
1.2.1.3. Czech
1.2.2. South Slavic
1.2.2.1. Bulgarian
1.2.2.2. Macedonian
1.2.2.3. Serbo-Croat
1.2.3. East Slavic
1.2.3.1. Ukranian
1.2.3.2. Russian
2. (Proto) Germanic
2.1. North Germanic (Old Norse)
2.1.1. Icelandic
2.1.2. Norwegian
2.1.3. Swedish
2.1.4. Danish
2.2. West Germanic
2.2.1. English
2.2.2. Frisian
2.2.2.1. most closely related to Eng. Spoken on the west coast of the Netherlands
2.2.3. Dutch
2.2.4. Low German, High German and Yiddish
2.3. East Germanic
2.3.1. Gothic
2.3.1.1. Death lang.
3. Celtic
3.1. Gaelic
3.1.1. Irish Gaelic
3.1.2. Scottish Gaelic
3.2. Britannic
3.2.1. Welsh
3.2.2. Breton
3.2.3. Cornish
3.2.3.1. Dead lang.
4. Italic
4.1. Latin
4.1.1. Portuguese
4.1.2. Spanish
4.1.3. Catalan
4.1.3.1. North-eastern Spain
4.1.4. Italian
4.1.5. French
4.1.6. Romanian
4.1.6.1. Direct descendant from Latin
5. Anatolian
5.1. Modern day Turkey
6. Tocharian
6.1. Dead lang.
6.1.1. region of China, mummies found
6.1.2. affinities with Italic and Celtic
7. Indo-Iranian
7.1. Indian
7.1.1. Sanskrit
7.1.1.1. Hindi
7.1.1.2. Urdu
7.1.1.3. Bengali
7.1.1.4. Marathi
7.2. Iranian
7.2.1. Persian, Pahlavi (Middle Persian)
7.2.2. Pashto
7.2.3. Kurdish
7.2.4. Farsi
8. Armanian
8.1. Minor language, developed directly from IE
9. Greek
9.1. Attic (Hellenic dialect)
9.1.1. Modern greek