["Class Select"]
    #Force player to pick a class after joining
    force_pick = false
    #Message players who haven't selected a class
    join_message = true
    #Ability to deselect classes (survival) via /classreset
    deselect = false

["Elf Class Attributes"]
    #Whether or not elves have night vision
    elf_night_vision = true
    #Set elf max health
    elf_max_health = 24.0
    #Add glowing effect when drawing bow
    elf_bow_sight = true

["Orc Class Attributes"]
    #Level of resistance effect
    orc_res_level = 0.0
    #Orc attack damage bonus
    orc_attack_damage = 1.5
    #Increased strength on low health
    orc_rage = true
    #Knockback resistance bonus
    orc_knockback_res = 1.1

["Dwarf Class Attributes"]
    #Increased mining speed underground
    dwarf_haste = true
    dwarf_max_health = 16.0
    #Level of resistance effect
    dwarf_res_level = 1.0

["Merfolk Class Attributes"]
    #Swim speed
    merfolk_swim_speed = 2.0
    #Whether or not the conduit effect is applied
    merfolk_conduit_effect = true
    #Merfolk attack damage level
    merfolk_attack_damage = 0.8

["Drakonis Class Attributes"]
    #Apply fire aspect to attacks
    drak_fire = true
    #Drakonis attack damage bonus
    drak_attack_damage = 1.25
    #Whether or not to resist damage from fire sources
    drak_fire_res = true

[Cosmetics]
    elf_ears = true
    orc_tusks = true
    merfolk_form = true
    dwarf_resize = true
    elf_resize = true
    orc_resize = true

Skins Used:

Dwarf

Elf

Orc

Merfolk

Drakonid

UI Templates (sourced from MCModels):

Class Selection UI