Just been reading a 1974 continental IO-360 operators manual and what struck me was the number of approved oil products
BP
Castrol
Conoco
Delta
ESSO
Pennzoil
Phillips 66
Quaker State
Socony-mobil
Shell
Sinclair
Texaco
Union
These days I can think of hardly any
Aeroshell
Total – but I don’t remember them when I was younger
And that’s it
I can remember
mobile one – less said the better
Castrol – I remember them leaving the aviation market a few years ago.
Bakers Oil – and I’m don’t think that was even an aviation oil.
Phillips 66 is still around.
I am sure many are rebrands. For example it’s often been said that TOTAL aviation oil is a rebrand of another.
Bathman wrote:
Bakers Oil – and I’m don’t think that was even an aviation oil.
Isn’t it for making bread? 
Mobil 1 – a very expensive oil – is not suitable for our air cooled aero engines but has some very good uses but needs to be used with care, as described.
Never heard of Mobile One.
