Ooh! Thank you! Added.

SBW:

1/5 Lightning is held dear and near in SBW but the grand goal is to also become one of the best chain wallets out there.

In that vein, today's 2.2.14 update adds a comprehensive RBF and CPFP support for the busy mempool day that is to come.

Blixt:

BumpFee bumps the fee of an arbitrary input within a transaction.

https://github.com/hsjoberg/blixt-wallet/search?q=bumpfee

However, maybe that hasn't been implemented?

Add the ability to RBF for onchain transactions #412 https://github.com/hsjoberg/blixt-wallet/issues/412