Yep this ^^^
A squirt of washing up liquid and a teaspoon of sugar. The washing up liquid deals with the oil and the sugar acts as a mild abrasive. Much better than Swarfega, and more environmentally friendly as no microplastics.
^^^ This. However......after years of doing this, week in week out, I decided I'd had enough of scrubbing my hands almost until they bled. I bought my first box of disposable nitrile workshop gloves from Euro Car Parts a few years ago and I'll never go back to bare hands again. You can reuse the gloves basically until they form a hole, then throw them. A box of 100 gloves (50 pairs) last me about a year and I clean my bike three times a week. One ride = one cleaning session. I even build wheels with them on so touch and feel isn't compromised by wearing a glove.
I still use Swarfega with microplastic grains from the very large container that I bought years ago.
A dab of liquid hand soap with half a teaspoon ofsugar.

A squirt of washing up liquid and a teaspoon of sugar. The washing up liquid deals with the oil and the sugar acts as a mild abrasive. Much better than Swarfega, and more environmentally friendly as no microplastics.