There is "Sakamoto Elementary School in Chuo Ward" (upper photo) in Nihonbashikabutocho. Founded in 1873 (1873), it is the first school in the first junior high school district of the first university ward, so it has a long history as "one, one, one, one school" and is also known as a school from Junichirou Tanizaki. Next to it is "Sakamotocho Park" (pictured), which opened in 1889 (1889). As you noticed, there are two types of notations here, "Sakamoto" and "Sakamoto".
The name "Sakamotocho" is based on "Sakamoto" in guardian angel at Mt. Hiei Enryaku-ji Temple in Oomi country and "Sakamoto" in temple town in Hiyoshi Taisha Shrine. In the pictorial map of the late Edo period, it was located on the west side of the gate of Sanno resting place of portable shrines (Hie-jinja Shrine) and was also known as the so-called "Tana". The remnants of the town name are Yakushi Kayabacho, and there is a Tensui bowl (inhabitant's cultural property = lower photo) dedicated in 1841 (1841) in the current precincts of Chisen-in Temple, and it is described as "Sakamotocho".
"Sakamotocho Park" follows the historical place name from the Edo period, but why is "Sakamoto"?
As you know, there is a similar example. In the Edo period, Osaka was "Osaka", but now "Osaka". "Matsuzaka" in Ise country is described as "Matsusaka" in Mie Prefecture (the correct reading of the place name is "Matsusaka" and does not become cloudy).
There is such a theory.
1. "Slope" is mischievous because it tilts and rolls down, so he changed it to "Osaka".
2. "Slope" leads to "extinction" by "returning to the soil" and has a bad luck, so "Kozato" based on "fu", which means "hill, big, many, rich, prosperous" It was said that "Osaka" of "Hon" was hit.
3. "Saka" was changed from "Saka" to "Saka" from "shi warping (bumurai rebellion)".
――And so on.
"Slope = bad luck" seems to be a common feature, but it is not clear whether it is a story or not. If you have any questions, please let me know. It seems that "Osaka" has been used since the Meiji period. In any case, this area is a place where "Slope" and "Saka" can be compared.
By the way, "Saka" is a common kanji and is a learning kanji learned in the third grade of elementary school. However, "Osaka" is not a common kanji but is considered to be an alien character of "Saka", but since it is currently under review, both "Sakamoto" and "Osaka" are likely to be a major player.