All data obtained from @SonOfTheBronx on Twitter:
Son Of The Bronx/Programming Insider

May 12th 2018

Time
Show
Ratings
A18-49
10:30pm Dragon Ball Super 936,000 575,000
11:00pm DBZ Kai 734,000 433,000
11:30pm My Hero Academia 578,000 354,000
12:00am Fooly Cooly 501,000 306,000
12:30am Jojo’s Bizarre Adventure 497,000 307,000
1:00am Hunter X Hunter 450,000 272,000
1:30am Black Clover 397,000 243,000
2:00am Naruto Shippuden 377,000 229,000
2:30am Space Dandy 305,000 180,000
3:00am Cowboy Bebop 316,000 171,000
3:30am Ghost In The Shell 287,000 169,000

;
comparison

May 13th, 2017

Time
Show
Ratings
A18-49
11:00am Samurai Jack 1,327,000 807,000
11:30am Dragon Ball Super 1,054,000 657,000
12:00am DBZ Kai 1,107,000 678,000
12:30am Attack on Titan 951,000 578,000
1:00am Tokyo Ghoul 803,000 516,000
1:30am Hunter X Hunter 755,000 498,000
2:00am Gundam Unicorn 561,000 339,000
2:30am Naruto: Shippuden 539,000 333,000
3:00am Ghost In The Shell 509,000 305,000

If you want more data, you can check my spreadsheet here;. That will have further data including per year difference and A18-49 differences.

Let us know what you think in the comments below about the ratings.