Jagannth swami nayana patha gami bhaba tume'' ( ଜଗନ୍ନାଥ ସ୍ୱାମୀ ନୟନପଥ ଗାମୀ ଭବତୁମେ ) There are many communities which argue lord jagannath as their god and that's the reason why he is called jagannath means owner of the world. Let's come to their argument.
1. TRIBAL AND BAISHNAV
The arguments of tribal culture and baishnav are interlinked and their believe intersection clearly visible on different jagannath culture. Firstly our tribal people worship nature as their god like river , stone, tree , sun etc and they called Neem tree as jaganta maybe it's the source of the name Jagannath according to historians . According to Vaishnav after Mahabharat war the Pandavas put the remaining body part of lord sri Krishna into a Neem wood and put into the sea which was collected by king of tribal area Shabar and worshiped as Nilamadhab which is the the first shape of Lord Jagannath and that remaining body part turned into blue diamond which is called Mahabramha in jagannath culture. But some say that there is no custom of worshiping the dead body remaining part in hindu culture because Hindus believe in spirit not in body but still the above description about the origin of lord jagannath is the most accepted argument.
2.BUDDHIST
According to some Buddhists Puri was their worship place and Jagannth is their God. They call their Ashram as BIHAR or PURI so maybe the name came from there. According to them the Mahabramha is nothing else but the left molar teeth of Lord Buddha( srikhetra or puri is named as Dantapuri in their scripture 'KALINGA BODHI'). They compare Jagannath, Balabhadra and Subhadra with their BUDHA , DHARMA and SANGHA respectively. Car festivals are also present in their culture . They believed that GAJANANA style was also from them because it's believed that Bddha was a white elephant in previous birth. Buddha didn't like to take garland in neck so Jagannath didn't take garland in neck but in hand. According to kabi Jayadeva in Gitagovinda keshava dhruta buddha sharira jaya jagadisha hare( କେଶବ ଧୃର୍ତ ବୁଦ୍ଧ ଶରୀର ଜୟଜଗଦୀଶ ହରେ ).
3.JAINISM
Jainism also has very strong proof . They are the first idol worshipers in India which is logical evidence. They call their Adijin as Jagannath . According to Jain Kaibalya means salvation/moksha and there is no need to describe how kaibalya is important in jagannath culture. They claimed that Idol is made up of Baddha mangala and nadi ganga . Lord Jagannath is actually described as Adijin in Abhidhan rajendra . They think that the 22 stairs in srimandir according to their first 22 jain guru.
4.TANTRIC
According to tantric Jagannth is devi and their goddess. According to them Bimala and Jagannath are not different, they are the same but in another form . You have seen a boy with earrings but not with nose rings but Jagannath pravu have nose rings in nose so they claimed Jagannath as their devi. All the gods have specific shapes except lord jagannath and sitting on devi chakra protected with 9 devis in different directions. Jagannath is worshiped with a secret style only once in a year in Amavas with biri khichdi(it's described as nonveg in tantra) and coins with nude images(it's described as kama or sexual yoga in tantra), with chinarose ( as blood) . There are many believes like ganapatya , shaiba , sikhism that are linked with jagannath culture.
Christ and Islam is not so linked with Akhand Bharat . So we haven't seen any similarities in it.
JAGANNATH IS ABOVE ANY RELIGION ANY CASTE AND ANY BOUNDARIES.
There is a poem of UtkalaMani Gopabandhu -
"ଭାରତ ସରସେ ଉତ୍କଳ କମଳ
ତା ମଧ୍ୟ କେଶର ପୁଣ୍ୟ ନୀଳାଚଳ
ଉତ୍କଳ ନେତା ର ନାହିଁ ପ୍ରୟୋଜନ
ଉତ୍କଳ ନେ ହିଁ ସ୍ୱୟଂ ନାରାୟଣ "
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