Nineteen thirties’ shoes from the same company look “clunky” to me. Their thick heels drop straight from the arch to the ground, and the shoe covers much more of the foot.
I see a big difference between the fashionable shoes of 1929 — most of which seem graceful and beautiful to me — and the chunkier, more covered-up shoes of 1936.
In March 1929, Delineator ran a fashion article (by Lucile Babcock) on Spring shoes, which featured these six shoes, from different manufacturers. The following quotations come from Babcock’s article.
“Patent leather is most successful when combined with lizard or kid in a monotone.”
“Water-snake and lizard are carried over for the spring session, and those lovely gray-beige tones which blend so well with frocks of beige, gray, blue or green are witnessed everywhere…. Kid-skin colors hold a brief for the sunburn vogue, and all tones of beige are important.” (Suntanned skin was just becoming chic in the late twenties.)“The fabric shoe, essentially a sports style, is very definitely on trial for its acceptance by smart women…. In its best aspects, the fabric shoe is the prefect final note of gaiety for the white costume.”
“Two blues demand attention, a slate blue and a deep bright blue called “commander.’ ”“A new leather called “frosted calf,” with a lustrous surface, is seen in gray (a deeply beautiful gun-metal hue) in beige, brown and black.”
Coordinating stocking colors were recommended for each featured shoe. “So specialized is the hosiery situation with its complexion tints and sunburn hues that the wise woman saves time and effort by selecting her hose wardrobe at the same time that she makes her shoe decisions.” 
By 1936, stocking colors were more natural, but still coordinated with shoes and/or clothes.
These shoes foreshadow the higher, chunkier shoes of the 1930’s, but the 1929 sport shoe (below at top left) still has thin, graceful trim.
Speaking of sport shoes, this nineteen twenties’ ad for ZIP depilatory shows them worn with socks.
In 1934 you could still buy Sandals (a Walk-Over brand) with straps almost as thin as 1920’s shoes:
But the lace-up shoe in the same ad was more in line with mainstream fashion by then, with a high heel and high vamp covering most of the foot.
I love the Twenties’-look shoes used in this 1936 Lux soap ad:
But fashion is a tyrant. Did they look old-fashioned to the eyes of 1936?
One more look at 1928:
Here are oxfords from 1936 versus 1928: