Private Debt/Direct Lending/Private Credit - What are the differences? Best firms with WLB

Forgive me for the naive question but are the terms Private Debt/Direct Lending/Private Credit interchangeable? I've been trying to do some reading to differentiate but it seems to be the same business model. 

Also does anyone know companies in this space that have good WLB? I keep hearing of Credit funds that require 40 hours per week on here but can anyone specify ones they know are good? I am looking to get into the space and WLB is important to me.