The 1L-AA does have 2-levels using a 14500 when configured as Lo-Hi. It’s just that they aren’t as visually distinctive as compared to something like the OL i5t’s 2-levels. Also, one must half-press relatively quickly (short OFF time) to switch between from one level to the other.
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Actually I should have said “(short ON time)”. To get to High from Off, simply double click quickly fom Off.
However, if the first click to Low is On for more than about 1 second, getting to High from that point requires a double click to cycle through Low-then-High.
So, jaxman can make a driver with 2 levels…I am not sure if the levels will suit your needs.
I can tell, though, that the E3 is an incredibly strong flashlight as host