Bahaullah did not claim to be the Messiah of Jews, in his core book Kitab-i-Iqan.
Regards
Depends how you look at it
"Old English Messias : via late Latin and Greek from Hebrew māšīaḥ ‘anointed’.
Thus Christ in English means, "'Messiah "Anointed One'". Messiah - Wikipedia
MORE RELATED WORDS FOR MESSIAH;
King of Kings.
Lamb of God.
Lord of Lords.
Messiah.
Prince of Peace.
Lord.
Thus a few passages from the book you quote;
"...To resume: Our purpose in setting forth these truths hath been to demonstrate the sovereignty of Him Who is the King of kings...." Baha'u'llah : The Kitab-i-Iqan
"...What!an the lowly dust compare with Him Who is the Lord of Lords?..." Baha'u'llah : The Kitab-i-Iqan
"...Thou hast witnessed how these companions have, through the wonders of the grace of the Lord of Lords, hoisted the standards of sublime renunciation upon the inaccessible heights of glory...." Baha'u'llah : The Kitab-i-Iqan
"...Content with transient dust, these people have turned their face unto it, and cast behind their backs Him Who is the Lord of Lords...." Baha'u'llah : The Kitab-i-Iqan
"...That seeker must at all times put his trust in God, must renounce the peoples of the earth, detach himself from the world of dust, and cleave unto Him Who is the Lord of Lords...." Baha'u'llah : The Kitab-i-Iqan
"....With both his inner and his outer ear he will hear from its dust the hymns of glory and praise ascending unto the Lord of Lords, and with his inner eye will he discover the mysteries of "return" and "revival."..." Baha'u'llah : The Kitab-i-Iqan
Thus each Messenger from God, is a Messiah (Anointed One). Likewise Muhammad.
Regards Tony