At Rimuru's current state , Rimuru isn't a match for the old ones(Guy,Milim,Dino,Dagruel). won't talk about ramiris(young).
Rimutu will win against Claiman,Frey,Karion for sure, I'm not sure about Leon and Ruminas though.
**spoiler**
Also , veldora isn't really that strong compared to his sisters.
Σ( ￣□￣||)
I had a feeling since he's so spoiled n cute. Must've rampage cuz his sisters r overbearing.
OOP- Rimuru vs other demon lords, and dont forget Rimuru has Diablo and Veldora now i wonder who would win(๑•ㅂ•)و✧(well its kinda obvious that Rimuru will but..)