This app was mentioned in 2 comments, with an average of 1.00 upvote
Pretty much the two you listed are the most common ones I see, but having cash is pretty much required it can be random to which shops even support them. I think you need a bank account to use Line Pay and JKO properly anyway.
https://play.google.com/store/apps/details?id=com.jkos.app
I like that there's a 5% cashback on Wellcome, but it's a long way away from being ubiquitous/useful enough to replace Easycard.