Are electrons smaller than other particles

No particle exists that is smaller than an electron. The electron is the smallest particle. "Smaller" as you are thinking is mere energy. Quarks, Leptons, Mesons, Smiles, Frowns, Ups, Downs, etc., are all expressed as energy.
:)

They lack magnetic fields i do believe

Aseasonal prevailing wind in the region of south and southeast asia, blowing from the southwest between may and september and bringing rain (the wet monsoon ), or from the northeast between october and april (the dry monsoon ).