Hmm well, it has really nice historical aspects in my opinion but I watched Kingdom first and then Arslan senki and found that they were similar. Personally it’s in my top 3 favorite anime but you may not like the CGI in season 1. I’m not sure how you feel about CGI but season 2 and 3 get much better but it is an on-going anime but I guess because of COVID it got stopped. I just love everything about it.
I don’t think I would like the visuals more than in Arslan Senki but it does not look bad so I will definitely give it a try :) Thanks for the recommendation!
Have you seen Akatsuki no Yona? I would say it’s less historical and it definitely is different to Arslan Senki but they still share a lot of parallels as well. If you like these kingdoms & princes/princesses stories in general, you should give it a try.