Question: The most common shape of tree-topper is a common figure in what family of religions?

Context articles: Swampland in Florida
Trichopus zeylanicus
Tree-topper
Devil's grandmother
Bread pan
Bell roof
Axel jump
Jack Robinson (mythical person)
Angel
Trust law in civil law jurisdictions

Swampland in Florida refers to decades-old but still recurring real estate scams involving swamp lands misrepresented as being possible to develop, or "buildable".
 These scams became widely known and now also have meaning as a common figure of speech.
Trichopus zeylanicus is a small herbaceous plant, which is one of only two species of its genus, "Trichopus".
 Formerly it was placed in its own family, Trichopodaceae, but is now included in the Dioscoreaceae family.
 The leaves are about 20 cm long and grow from a rhizome.
 The shape of the leaves can be highly variable even within one location, but the most common shape is cordate.
 The herb grows on sandy soil near rivers and streams in shady places in lowland and intermediate altitude forests.
 It flowers year long and the fruits are thought to be dispersed by water.
 The unusual flowers are purplish black.
A tree-topper or treetopper is a decorative ornament placed on the top (or "crown") of a Christmas tree or Hanukkah bush.
 Tree-toppers can take any form, but the most common shape is that of an Angel (a "Christmas angel"); tree-toppers shaped as stars (representing the "Christmas star" or the Star of David) or finials are also common.
 Other less common tree-toppers include paper rosettes, ribbon bows, Father Christmases or Santa Clauses, Christian crosses, owls, and sunbursts.
The devil's grandmother is a common figure in Russian folklore, mainly used in curses and as a reason that something has gone wrong, e.g. when a machine breaks down.
 She also appears in the German fairy tales "The Devil and his Grandmother" and "The Devil with the Three Golden Hairs".
A bread pan, also called a loaf pan, is a kitchen utensil in the form of a container in which bread is baked.
 Its function is to shape bread while it is rising during baking.
 The most common shape of the bread pan is the loaf, or narrow rectangle, a convenient form which enables uniform slicing.
 The bread pan is made from a conductive material such as metal which might be treated with a non-stick coating.
 It can also be made of heat resistant glass, ceramic, or a special type of paper that sticks to the dough but is easily removed, once cooked.
 Bread pans are found in a variety of designs and sizes providing the baker with different possibilities not only for baking bread, but also cakes and puddings.
A bell roof (bell-shaped roof, ogee roof, "Philibert de l'Orme roof") is a roof form resembling the shape of a bell.
 Bell roofs may be round, multi-sided or square.
 A similar-sounding feature added to other roof forms at the eaves or walls is "bell-cast", "sprocketed" or "flared" eaves, the roof flairs upward resembling the common shape of the bottom of a bell.
The axel is a figure skating jump with a forward take off.
 It is named after Norwegian figure skater Axel Paulsen, who, in 1882, was the first skater to perform the jump.
 Compared to other common figure skating jumps, an axel has an extra ½ rotation in the air because of its forward take off.
 Most skaters perform the jump with counterclockwise rotation, taking off from the left forward outside edge and landing on the right back outside edge.
 (But a minority of skaters perform it the opposite direction).
 The axel can also be done as a double jump with 2 ½ rotations, or as a triple jump with 3 ½ rotations, or a quadruple axel with 4 1/2 rotations, but no skater has yet accomplished a quadruple axel in competition.
Jack Robinson is a name present in a common figure of speech used to represent quickness.
An angel, especially according to Abrahamic religions, is a spiritual being superior to humans in power and intelligence.
 Angels are typically described as benevolent, dreadful, and endowed with wisdom and knowledge of earthly events, but not infallible; for they strive with each other, and God has to make peace between them.
 Most of them serve either as intermediaries between Heaven and Earth, or as guardian spirits.
Trust law is not part of most civil law jurisdictions, but is a common figure in most common law system (and thus in most Commonwealth jurisdictions).
 Trust law enters civilian jurisdictions through conflict of law arrangements recognizing it as a matter of private international law and has been implemented in the civil code of certain countries such as Liechtenstein and Curaçao.