Millie Moon suddenly giving rashes? New diaper brands recs

We’ve been using Millie moon since birth with no issues! My 4.5 month old has developed terrible red outline like rash that just kept getting worse (triple paste did nothing, aquaphor is helping a little) I started searching on here and saw so many had chemical burns from them all the sudden and I just realized we opened a new box right when the rash started!! Any other brand recommendations? I’m thinking rascals, pampers pure, huggies natural. Tried kudos before and hated them! Parasol was good they’re just pricey and I noticed a strong urine smell easily. She sleeps 10-12 hours through the night so we need something absorbent! TYIA😊