Taken from a kinda of doujinshi by the production team of the series https://emptymovement.com/media/categories/utena-oh-my-utena-newtype-november-1997.38/
In 2019, a poll was made for the best episodes from a lot of anime based on Rumiko Takahashi manga, these were the top 10 episodes of Ranma 1/2 elected by fans:
10- Episode 161: Boy Meets Mom, Part II
9- Episode 20: Close Call! The Dance of Death... On Ice
8- Episode 15: Enter Shampoo, the Gung-ho Girl! I Put My Life in Your Hands
7- Episode 39: Kissing is Such Sweet Sorrow! The Taking of Akane's Lips
6- Episode 149: Wretched Rice Cakes of Love
5- Episode 123: A Xmas Without Ranma
4- Episode 110: Nabiki, Ranma's New Fiancée?
3- Episode 131: Akane Goes to the Hospital
2- Episode 1: The Strange Stranger from China
1- Episode 9: True Confessions! A Girl's Hair is Her Life
Link with the poll to other anime: https://www.furinkan.com/features/articles/toprumic-episodes.html
Urusei Yatsura characters that appeared in the top 5 polls of favorite female and male characters on the magazine Animage through the years.
I often see people saying that the og anime made the other girls seem like possible options for Ranma but i only saw he loving Akane there, and while it's true that Akane hits him more, it never felt undeserved as Ranma does make comments and actions towards her that don't feel much different from the manga. The og anime has some negative aspects indeed (some fillers are boring, some arcs like the Martial Arts Takedown were worse, though still fun, and the anime is rough during the second half of season 3 and the first half of season 4), but i don't think it ever felt completely different from the manga as some say, and it definitly didn't ruin Rankane.