I think the following all count as copulative verbs. No doubt others, too.Haec omnia verba copulativa putantur, ut credo. Sine dubito, alia invenientur.
sum, am; fio, become; sto, stand; maneo, remain; nascor, am born; videor, seem; appellor, am called; dicor, am said; vocor, am called; nominator, am named; putor, am thought; designor, am elected; creor, am created; allegor, am selected.
I'm writing in Latin hoping for correction, and not because I'm confident in how I express myself. Latinè scribo ut ab omnibus corrigar, non quod confidenter me exprimam.