There are claims in progress regarding the discovery and isolation of elements beyond 118. Let me know when these are confirmed and I will add them to the table.
When refering to unknown elements they are usually referenced by number e.g. One-One-Eight. The numbers are often written in a language similar¹ to Latin and forced to end with "ium".
e.g. One One Nine = Un Un Enn Ium, this is written as Ununennium. These numeric names should not be used once an official name has been assigned.
120=Unbinilium (Ubn), 121=Unbiunium (Ubu), 122 = Unbibinium (ubt).
 
I am aware of reasearch into atom like structures with atomic number 0. (i.e. "relatively" stable complete particles with no protons/electrons but a cluster of other sub-atomic particles.) They are not listed here because it would make the table over complicated and they do not fit the "traditional" definition of an element.
 
¹The latin digit names are often shortened to ease pronunciation. There is no zero in Latin, hence, "Nil" is often used as a replacement.