Array
(
    [0] => thumbnail
    [1] => medium
    [2] => medium_large
    [3] => large
    [4] => 1536x1536
    [5] => 2048x2048
    [6] => vp_sm
    [7] => vp_md
    [8] => vp_lg
    [9] => vp_xl
    [10] => vp_sm_popup
    [11] => vp_md_popup
    [12] => vp_xl_popup
)