So as a fun expiriment I decided to contrast the avaliable data from the smash or pass polls from both pokesmash.xzy and rule34.xxx. One thing to note is that the numbers for Pokesmash are bigger than those of the rule34.xxx site. Example Ninetales is at 98k votes while in rule34.xxx the highest number of votes is at around 28k to put in perspective. Pokesmash is a more general app while rule34.xxx is a porn site and there are notable differences. Anyways, here are the top 15 for rule34.xxx, if they have a parenthesis besides their smash percentage that means they dropped out of top 15 for the Pokesmash app and how much of a percentage drop they suffered.

Rule34.xxx:
1. Gardevoir 87.12%
2. Lopunny 83.88%
3. Braixen 75.95% (-11.38)
4. Glaceon 73.17%
5. Zoroark 71.02%.
6. Kirlia 70.98% (-26.85)
7. Meloetta 70.62% (-10.18)
8. Sylveon 67.79%
9. Delphox 67.76%
10. Hatterene 67.31%
11. Tsareena 66.22%
12. Vaporeon 65.92%
13. Mawile 63.92% (-21.75)
14. Roserade 63.03% (-12.73)
15. Salazzle 62.27% (+2.03)

Pokesmash:
(+0)1. Gardevoir 82.12% (-5)
(+0)2. Lopunny 76.54% (-7.34)
(+2)3. Zoroark 74.15% (+3.13)
(+5)4. Delphox 71.78% (+4.02)
(+18)5. Lucario 69.50% (+14.3)
(+5)6. Tsareena 68.98% (+2.76)
(+2)7. Sylveon 68.37% (+0.59)
(+4)8. Vaporeon 68.01% (+2.09)
(+20)9. Ninetales 67.35 (+13.94)
(+15)10. Primarina 67.34% (+(+13.43)
(-7)11.Glaceon 67.17% (-6)
(+64)12. Milotic 66.03% (+29.43)
(+35)13. Umbreon 65.36% (+19.61)
(+4)14. Lilligant 65.06% (+4.44)
(-5)15. Hatterene 65.02% (-2.29)

Source:
https://pokesmash.xyz/
https://rule34.xxx/index.php?page=smashpass&s=topsmash