Currently, I'm trying to get accurate figures for all of the various healing spells. The big question is with regards to the coefficients of these spells.

My 'base' list is:

Binding Heal 79.29%
Chain Heal 132.14%
Circle of Healing 39.64%
Desperate Prayer 79.29%
Flash Heal 79.29%
Flash of Light 99.11%
Greater Heal 158.57%
Healing Touch 158.57%
Healing Wave 158.57%
Holy Light 165.18%
Holy Nova 39.64%
Holy Shock 79.29%
Lesser Healing Wave 79.29%
Lifebloom 37.96% 45.00%
Lifebloom (x3) 37.96% 135.01%
Nourish 79.29%
Penance 105.71%
Power Word: Shield 79.29%
Prayer of Healing 79.29%
Prayer of Mending 79.29%
Regrowth 30.64% 183.93%
Rejuvenation 185.00%
Renew 185.00%
Riptide 23.79% 129.50%
Wild Growth 43.17%

Notes:
1. All figures are per-target, counting Chain Heal as having 1.75 'targets'.
2. Prayer of Mending is known to be bugged and not work according to standard methods. The figure I have listed is the theoretical per-target value, not the in-game value.
3. 'Hybrid' spells (with both a DD and HoT component) are almost certainly incorrect. Such spells have two coefficients listed, direct heal first.
4. Holy Light/Flash of Light appear to have a 25% bonus to coefficient in game (and is reflected above).
5. All figures are with no talents, glyphs or special equipment abilities.

Most of these are from Norfair's post in the druid thread. These coefficients are in terms of Spellpower. Some of yours were old values, in terms of +Heal.

Lifebloomx3 is not 3x Lifebloom, because each cast contributes to only 18 ticks (not 21).
Wild Growth is showing Talented number because it is so deep in the tree. That is a per-target number.

For Paladins, I am seeing a Flash of Light 100% spellpower coefficient and Holy Light 166% spellpower coefficient.

The bonus comes from banking in Blessing of Light into base healing spells.