There isn't a definitive and continuously updated running total of the number of particles predicted by theory before discovery, those that have been discovered and identified, and those that are presumed to exist but haven't been found yet. However, I can provide you with some general information about this topic.
In the field of particle physics, there have been several instances where theoretical predictions preceded the experimental discovery of new particles. For example, the Higgs boson was predicted in the 1960s as part of the Higgs mechanism, which gives mass to elementary particles. It took several decades until experimental confirmation of the Higgs boson's existence was achieved at the Large Hadron Collider (LHC) in 2012.
Similarly, the existence of neutrinos was postulated by theory before their direct detection. The neutrino was first proposed by Wolfgang Pauli in 1930 to explain the apparent violation of energy conservation in certain types of radioactive decays. The experimental confirmation of neutrinos came many years later.
In terms of the number of predicted particles versus discovered and identified particles, the Standard Model of particle physics, which is the current framework describing the known elementary particles and their interactions, includes a relatively small number of fundamental particles. These include quarks, leptons (such as electrons and neutrinos), gauge bosons (such as photons and W and Z bosons), and the Higgs boson. The Standard Model has been highly successful in describing a wide range of experimental observations.
However, there are phenomena and observations that the Standard Model does not account for, such as dark matter and dark energy. The existence of these entities is inferred from their gravitational effects on visible matter, but their precise nature and composition remain unknown. It is believed that they may consist of new particles beyond those described by the Standard Model.
The search for new particles and physics beyond the Standard Model is an active area of research. Experimental efforts, such as those at the LHC and other particle physics experiments, are ongoing to probe higher energies and explore new regimes of particle interactions. The goal is to uncover evidence for new particles and physics that go beyond our current understanding. As discoveries are made, our knowledge of the predicted versus discovered particles continues to evolve.