Bluewallet is working on integrating Ark and/or Spark
Discussion
I’ve looked into Ark but not sure about spark as they seem to be centralised and heard that it’s not so great on privacy
Spark, Ark, Greenlight, Liquid and ecash seem to be in a spectrum of trust tradeoffs when it comes to custody. Various wallets are leaning into one of these to make it simpler and easier for users to use Lightning.
I like what Zeus, Alby and Blixt are doing, which is none of the above. Closest to pure self-custody, but with a little bit of a learning curve.