You really want the airline to have some serious financial skin in the game so they have an incentive to complete your training if things change economically, Easyjet don't appear to and neither did Iberia (there's a thread about them as well). If/when the fully-funded TUI Programme re-opens, put an application in for that, also keep an eye out for the Aer Lingus programme which before the pandemic was fully-funded.
If you don't already have a Class 1 medical, think about getting one done. Some programmes have tighter lead times than others, if you already have the medical out of the way then any delays/complications shouldn't cost you a place on a training programme.