If there are any, please name combinations of lubricating oils/greases that can combine to make a sticky solid?

Silicone sealant is primarily PDMSO (polydimethyl siloxane) - lube oils and greases on the other hands are either hydrocarbons or in the case of greases, hydrocarbons gelled up with a metal soap or some sort of other heterogeneous gelling medium (e.g. bentone clay). There is no way to replicate the properties of silicone rubber using simple hydrocarbon oils. They do not have any of the same properties. If you combine lube oil and lube grease all you get is a somewhat softer lube grease!