Question: What group of people from Indian speak an Eastern Indo-Aryan language?

Context articles: Bengali dialects
Sadri language
Bangla
Sylhetis
Sylheti language
Halbi language
Assamese language
History of the Punjabi language
Angika language
Bengali phonology

The dialects of the Bengali language (বাংলা উপভাষাসমূহ) are part of the Eastern Indo-Aryan language group of the Indo-European language family.
 Barisalian or Borishali (Barisal Division), Noakhalian (Noakhali District), Rangpuri (Rangpur Region), Khulnaiya (Khulna region), Mymensinghi (Mymensingh region), Sylheti (Sylhet region) and Chittagonian (Chittagong region) are major spoken dialects in Bangladesh.
 Although these languages are mutually intelligible with neighbouring dialects of Bengali, they sometimes lack mutual intelligibility with the Standard Bengali language and sometimes would not be understood by a native speaker of Standard Bengali.
 This is mainly the case for only Sylheti and Chittagonian.
 Hence, sometimes these dialects are sometimes considered languages in their own right.
Jhaari, also known as Nagpuri and Sadri, is an Eastern Indo-Aryan language spoken in the Indian states of Bihar, Jharkhand, Odisha and the north of West Bengal, and in Bangladesh.
Bangla (Bengali: বাংলা) is the endonym (native name) of Bengal, a geographical and ethno-linguistic region in South Asia, or of the Bengali language, an eastern Indo-Aryan language.
 It may also mean:
The Sylhetis (Sylheti: ꠍꠤꠟꠐꠤ , Bengali: সিলেটি ) are an Indo-Aryan ethno-linguistic group of people who speak the Sylheti language and are native to the Sylhet Division of Bangladesh and the Barak Valley of the Indian state of Assam, with a sizeable population in Shillong, Meghalaya and Tripura of India and in London, United Kingdom.
 They are described as being both synonymous with Bengalis as well as a separate ethnic group due to historical isolation and lack of mutual intelligibility between their languages.
Sylheti (Sylheti: ꠍꠤꠟꠐꠤ "Silôṭi") is an Eastern Indo-Aryan language, primarily spoken by Sylheti people in the Sylhet Division of Bangladesh and in India in Meghalaya, the northern part of Tripura, and the southern part of Assam.
Halbi (also Bastari, Halba, Halvas, Halabi, Halvi, Mahari, Mehari) is an Eastern Indo-Aryan language, transitional between Oriya and Marathi.
 It is spoken by 500,000 people across the central part of India.
 It uses SOV word order (subject-object-verb), makes strong use of affixes, and places adjectives before nouns.
 It is often used as a trade language, but there is a low literacy rate.
Assamese ( ) or Asamiya (Assamese: অসমীয়া "Ôxômiya ") is an Eastern Indo-Aryan language spoken mainly in the Indian state of Assam, where it is an official language.
 It is the easternmost Indo-Aryan language and by extension the easternmost indigenous Indo-European language; it is spoken by over 15 million native speakers, and serves as a "lingua franca" in the region.
 It is also spoken in parts of Arunachal Pradesh and other northeast Indian states.
 Nagamese, an Assamese-based Creole language is widely used in Nagaland and parts of Assam.
 Nefamese is an Assamese-based pidgin used in Arunachal Pradesh.
 Small pockets of Assamese speakers can be found in Bangladesh.
 The Indo-Aryan dialects of North Bengal and northwest Bangladesh are linguistically closer to Assamese, have cultural and literary affinities with Bengali.
 In the past, it was the court language of the Ahom kingdom from the 17th century.
Punjabi is an Indo-Aryan Language developed from Old Indo-Aryan Languages, which were closely related to Vedic Sanskrit and Classical Sanskrit.
 By 600 BC Old Aryan Languages developed into many local dialects known as Middle Indo-Aryan dialects.
 Literary from these dialects was known as Prakrit.
 Shauraseni used in Eastern Punjab and Kaikeyi used in Western Punjab were among the famous Prakrits of ancient Indian Subcontinent.
 By 500 AD these Middle Indo-Aryan dialects had been developed many local features and lost many inflectional morphemes.
 Literary form of these dialects is known as Apabhramsha (ਅਪਭ੍ਰੰਸ਼,اپبھرنش).
 Principle Apabhramshas are Takka Apabhramsha in Central Punjab and Vrachada Apabhramsha in Southern Punjab.
 By 1200 AD these Apabhramshas or 'corrupt dialects' had few inflectional morphemes left.
 During Middle Ages Takka Apabhramsha developed into Lahori dialect and Vrachada Apabhramsha developed into Multani dialect.
Angika (अंगिका), or Chhika-Chhiki, is an Indo-Aryan language spoken primarily in eastern Bihar, Jharkhand, West Bengal, and the Terai region of Nepal.
 It belongs to the Eastern Indo-Aryan subgroup, which also includes Bengali, Assamese and Odia.
 Angika is written in the Devanagari script; although the Anga Lipi and Kaithi scripts were used historically.
The phonology of the Bengali language is, like that of its neighbouring Eastern Indo-Aryan languages, characterised by a wide variety of diphthongs and inherent back vowel (both /<a href="">o/ and /<a href="">ɔ/ ) instead of the schwa used by almost all other branches of the Indo-Aryan language family.