I’ve always admired elements of Anglicanism, Methodism, Anabaptism and the Quakers.
I love the Anglican liturgy, high church rituals, choral evensong, choirs and figures such as Evelyn Underhill, Thomas Traherne, the Metaphysical poets, George Herbert, Henry Vaughan, William Law, CS Lewis and so forth. There is a great deal to love and admire about Anglicanism.
Methodism - I love the Arminian approach to soteriology, the evangelism, the tolerance shown towards other confessions, the spirituality, the holiness movement and Christian Perfection, the social outreach to the poor and sick, the hymns and much more. The Wesley brothers, William Booth and other luminaries. Again there is a lot to love about Methodism.
Anabaptism - I appreciate the pacifism, the communalistic aspects, the regard for liberty of conscience, the mystical impulse (ie Hans Denck), the commitment to separation of church and state, the almost monastic non-conformity to the world and more.
The Quakers - their mystical understanding of the faith, their contemplative solitude and reverence for silence, their activism against slavery and on behalf of the rights of the oppressed. I class them among Protestant offshoot sects. Always admired them.