- Haribhunchai Art Group Artifacts in this group may be further divided into two subgroups - those created before 17th century B.E. and those between B.D. 1600 - B.E. 1836The first subgroup includes those exhibiting the influence of indian Art of Pala type and those exhibiting the influence of Dvaravati Art in the Northeastern region. Artifacts of B.D. 1600 - B.E. 1836 display special art charateristics pertaining especially to Haribhunchai, which truly evolved from the special Dvaravati Art as evidenced by general charateristics such as connected thick eye-brows, downward looking eyes with upward - pointed end, slightly open mouth. Therefore archaeologists classified Haribhunchai Art as belongint to late Dvaravati period. Pottery; on the other had, has fine yellowish texture coming in different shape decorated with incised designs. Most earthenwares are containers for ashes of the dead; others are shaped like urns holding water commonly found in the North.
- Lanna Art Group Artifacts in this group belong to the mid B.D. 19-25th century. They may be classified by art characteristics into four subgroups as follows:-
First Subgroup Artifacts in this subgroup show the evidence of search for self - identity, leading to the emergence of khamer influenced art group, Haribhunchai influenced art group, and Indian influenced Pala art group.
Second Subgroup This art group denotes the full maturation and perfection of Lanna Art, namely : having firmly established self identity, artists were than able to incorporate contemporary art - Sukhothai and Ayuttaya - and to blend them, thus achieving the creation of truly beautiful and esthetical Lanna Art.
Third Subgroup Artifacts in this subgroup show local characteristics such as Phayao while at the same time absorbed influence from Lanxang in the People Democratic Republic of Laos. Beside sculptures, other outstanding artifacts are porcelains from different kilns such as Sankhamphaeng, Khalong, Tungtaohai, Pan, etc.
Fourth Subgroup Artifacts in this group were created contemporaneously in the same period as Rattanakhosin Art. They show the integration of different types of Thai Art in the past. In this period, moreover, were created numerous objects, namely, silver flowers, gold flowers, gold/silver elephants, horses for donation to Buddhist monks, made of valuable materials such as silver and gold