https://www.biblegateway.com/verse/en/Genesis%2018:27
Yes being called Lord does not in itself make Jesus God. Remember Acts 2:36 God has made this Jesus, whom you crucified, both Lord and Messiah
Not even being called El or Elohim makes someone YHWH. Forinstance Ezekiel 31:11 and Psalm 45:6-7. Still of course there is much evidence for Jesus being God incarnate and nothing that explicitely teaches the JW doctrine about Jesus.