Ethnic groups similar to or like Konkani people

Indo-Aryan language spoken by the Konkani people, primarily along the western coastal region of India. One of the 22 Scheduled languages mentioned in the 8th schedule of the Indian Constitution and the official language of the Indian state of Goa. Wikipedia

Indo-Aryan language spoken predominantly by around 83 million Marathi people of Maharashtra, India. Official language and co-official language in the Maharashtra and Goa states of Western India, respectively and is one of the 22 scheduled languages of India. Wikipedia

Ethnoreligious subgroup of the Konkani people primarily living in the Konkan region of western India, who practise Islam. Indigenous Muslims from the districts of Sindhudurg, Ratnagiri, Raigad, Mumbai (Bombay) city and suburb, and Thane are generally regarded as Konkani Muslims. Wikipedia

Ethnolinguistic group who speak Marathi, an Indo-Aryan language as their native language. They inhabit the state of Maharashtra as well as districts bordering the state, such as Belgaum(known as Belgaon in Marathi) of Karnataka and the state of Goa in western India as well as districts of southern Gujarat and parts of Madhya Pradesh. Wikipedia

Demonym used to describe the people native to Goa, India, who form an ethno-linguistic group resulting from the assimilation of Indo-Aryan, Dravidian, Indo-Portuguese and Austro-Asiatic ethnic and/or linguistic ancestries. They speak different dialects of Konkani natively. Wikipedia

The Daivadnya Brahmins are a Konkani people and a subgroup of the Hindu Brahmin castes native to the Konkan, predominantly residing in Goa and Damaon, Canara (coastal karantaka), coastal Maharashtra, and Kerala. They are commonly known as Shet. Wikipedia