"For plan years 2014-2016, two documents are provided for each [Essential Health Benefits (EHB)] benchmark plan in the 50 states and D.C.: [1] a summary of the plan's benefit coverage and limits, including a list of covered prescription drug categories and classes; and [2] a list of state-required benefits. The list of each state's required benefits has been compiled to help states and issuers determine which state-required benefits must be included in plan designs. For 2017, two documents are provided for each proposed EHB benchmark plan: [1] a summary of the plan's coverage of certain benefits that appear on the Plans & Benefits Template, including a list of covered prescription drug categories and classes; and [2] supporting plan documents that provide detail regarding all plan coverage, limits, and exclusions.... [W]hen designing plans that are substantially equal to the EHB benchmark plan issuers may need to conform plan benefits, including coverage and limitations, to comply with [recent federal] requirements and limitations."