Here’s a short list of common themed delusions that are split into categories. For me, I think the focus of having such content catagorized is to find which parts of thoughts are being deluded
Involving Self Or Personality:
of having become another person: appersonation, appersonification; with a religious content: hieromania; of guilt, sinning, having committed some unpardonable sin: enosimania; of grandiose ability; of being God: theomania; of being the universe: cosmic identification of being of divine or celestial orgin: uranomania; of being of distinguished or royal parentage: Mignon delusion; family romance or being of superior intelligence: sophomania; of being loved by another: aidoimania; delusional loving: erotomania.
Involving One’s Body:
of being beautiful: callomania; of being physically deformed: dysmorphomania, dismemberment complex; part(s) of one’s body are larger: macromania; part(s) of one’s body are smaller: micromania; that one has a double: heutoscopy; of having a vile or repugnant odor: automysophobia; that one has changed into and animal (or, less common, that one can change others into an animal): delirium of metamorphosis.
Involving The Outside World:
of having imaginary companion: Doppelganger; of one’s spouse or sexual partner having being unfaithful: delusion of infidelity; of persecution, harassment, libel, slander, undue influence, external control: delirium of interpretation; of being watched: delusion of observation; that one’s mind controlled by an outside agency: Clerambault-Kandisky complex; that one’s thoughts are influenced by others: constraint of thought; of possession by evil spirits, of being poisoned by the devil: cacodaemonomania; of being influenced by an imposter: delusion of false recognition; that a known person has been replaced by an imposter: Capgras syndrome; that a persecutor has adopted the form a known person: Fregoli’s phenonmenon.
Nihilism; nihilistic delusion; delire de negation; of being dead: necromimesis; of not having a body: Cotard’s syndrome; acenesthesia; of memory or orientation being lost: negativistic amnesia; if one stops, so will the world: ergasiophobia; denial of existing body change, illness defect: anosognosia.