Another to add to the list is the Fenix L0D. Out of all the ones you mentioned this has the easiest to change out battery (not counting the Zebra).
It is 0.8 oz WITH one AAA lithium AAA battery. I like that it can clip to your hiking hat or just carry it around on the key ring. And it’s easily adaptable to a bike light.

https://www.fenix-store.com/product_info.php?cPath=22_69_49&products_id=191

some specs (courtesy of above sight):
• Cree 7090 XR-E LED
• Five output modes: 30 Lumens(3.5hrs) -> 11 Lumens(8.5hrs) -> 75 Lumens(1hrs) ->Strobe -> SOS
• Four days of survival use (two continuous hours per day on the lowest setting)
• Uses one 1.5V AAA battery (not included), inexpensive and widely available
• 7.35cm (L) x 1.4cm (D) (or 2.9 in (L) x 0.6 in (D))
• 14.5-gram (or 0.5 oz) weight (excluding batteries)
• Made of aircraft-grade aluminum
• Durable Type III hard-anodized finish
• Toughened ultra-clear glass lens with AR coating
• Waterproof to IPX-8 Standards
• Capable of standing up securely on a flat surface to serve as a candle
• Input voltage: 0.8V~3.3V
• Reliable twist-switch
• Includes a spare o-ring, a split ring, and a pocket clip





“Will it break if my dog (80 lb.) steps on it?”

For the Fenix, since there’s no plastic, it would seem unlikely.

-Barry