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

June 9nd, 2018

Time
Show
Ratings
A18-49
10:30pm Dragon Ball Super 802,000 496,000
11:00pm DBZ Kai 660,000 365,000
11:30pm My Hero Academia 520,000 284,000
12:00am Fooly Cooly Progressive 441,000 239,000
12:30am Jojo’s Bizarre Adventure 391,000 217,000
1:00am Hunter X Hunter 377,000 205,000
1:30am Black Clover 333,000 197,000
2:00am Naruto Shippuden 337,000 217,000
2:30am Space Dandy 260,000 164,000
3:00am Cowboy Bebop 241,000 158,000
3:30am Lupin The Third 239,000 144,000

;
comparison

June 10rd, 2017

Time
Show
Ratings
A18-49
11:00am Samurai Jack 884,000 497,000
11:30am Dragon Ball Super 856,000 510,000
12:00am DBZ Kai 893,000 537,000
12:30am Attack on Titan 171,000 465,000
1:00am Tokyo Ghoul 583,000 377,000
1:30am Hunter X Hunter 530,000 389,000
2:00am Gundam Unicorn 530,000 372,000
2:30am Naruto: Shippuden 513,000 341,000
3:00am Ghost In The Shell 469,000 331,000

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.