It´s not easy to make a complete list of all the dolls but I will try my best to describe some characteristics from each year. Follow links for pictures of my dolls and more details.
1963- 1967
1963: Sindy introduced in UK retail catalogues (September launch). Original doll Made in England.
1964: Sindy marked Made in Hongkong sold outside UK .
Blonde, auburn, brunette.
1965: Sindy marked MIHK and MIE . Bendable vinyl legs and arms introduced.
Blonde, auburn, brunette
Sindy Made in England (1963–1966) – Identification Guide
Weekender & Sindy Made in England #12GSS
Dream Date & Sindy Made in England 1963-1965
Lunch Date & Sindy Made in Hongkong
New Look Sindy. Side part hair and twist waist introduced. Brunette, auburn, blonde.
Walking Sindy introduced. Brunette, auburn, blonde.
Centrepart Sindy re-introduced. Brunette, auburn, blonde.
Lovely Lively and Trendy Sindy introduced. Brunette, auburn, blonde.
Poseable head mentioned in catalogue.
Top Pop Sindy. A rare walking Sindy. Her head turns when you move her arms. A function I have seen in my 50s Ginger Cosmopolitan dolls.
Funtime Sindy introduced. A simpler doll without twist waist and non bendable legs. Active Ballerina Sindy "fully posable" doll introduced.
New funtime doll with bendable legs and twist waist.
New funtime doll with shorter hair.
New Weekender Sindy introduced.
Sweet Dreams Sindy is the biggest news with eyes that can be opened and closed.
Sindy with bunches introduced with Keep Fit Sindy.
Styling Sindy with waist long hair and hair styling accessories introduced.
More variations in markings and bodies depending on Made in Hongkong or China.
Shorter hair Sindy introduced in the UK.
Fashion Faces Sindy with make Up included to change hair and face.
New Hairstyle with sidepart and lots of curls with Masquerade Sindy.
More hairstyles and hairtypes like Starlight Sindy with crimped hair, Space Fantasy with new hairline and pink fantasy color. Side braids Sindy with the new active Sindy Shaping Up.
New Face Sindy often referred as Smirky Sindy. Painted lashes. New body type both as funtime, basic and active. Only one year in the transition between Pedigree and Hasbro.