Put me down as another vote for Old Brown Glue (OBG) especially when 
doing repairs on antiques. I have used it for years and am quite pleased 
with it. I put the new the bottle straight into the fridge and cut out 
chunks as required. Most of the stuff I glue is small so I don't 
normally heat the entire bottle when using it. Instead I break off 
chunks (very rubbery when chilled) and place them on a piece of plastic 
wrap pressed over the surface of hot water in a coffee mug, then apply 
with a small brush.

I have also been experimenting with Columbia Organ Works high tack fish 
glue.
<https://www.columbiaorgan.com/columbia-leather-home/products/adhesives/>

Then sent me a sample when I ordered some leather and it has the 
properties of hide glue I like best without the need for refrigeration 
and heating. So far I haven't tried it on anything seriously structural 
but have had great luck with veneer patches and small repairs.

Troy