IMO the best way to think of fascism is as a checklist. You might not fulfil every criterion, but if you fufil enough, you're fascist.
Cultivation of a cult of personality around the leader is essential. That leader is transactional. He (doesn't have to be a he - extreme mysogyny and promotion at least superficially of traditional values is characteristic but not essential) surrounds himself with those whom he has done favours and who have done him favours, but he is brutal with them - they compete with each other to do his bidding, and he encourages this process.
The vision of the state is corporatist, denying class as a legitimate concept, while at the same time, the leader is the champion of the worker and the common man (more rarely the common woman as well, but in most fascist conceptions, a woman is an extension of, and secondary to, a man). His vision of society, such as it is, is corporatist. It is likely based heavily around the family unit.
The leader is disdainful of the democratic processes that he may have used to gain power, and subverts them wherever he can. Dissenters are pursued. To disagree with him is to be his enemy. The fascist also has a keen interest in control over the dissemination of information and seeks to be the final arbiter of truth. He is vengeful and may be capricious, and to speak against him in any way is to lose favour immediately.
Fascism is aggressively nationalist. It looks backwards to an invented history to justify its nationalism. It is an aggressive xenophobic nationalism. It defines its in-group and persecutes its out-group.
The fascist may or may not lean on religion. If he does so, the primary purpose of this is to enforce the in-group identity. He scapegoats aggressively and blames his own failings and failures on the outgroup, hatred of which he cultivates assiduously (and that out-group can and will include various 'enemies within'). Cultivating hatred is characteristic of fascism. You love your own and you hate the other.
At the very least, Trump is a wannabe fascist dictator. That would be his ultimate dream. He ticks more than enough of the boxes.
TBH the one thing I don't quite see him as is the ultimate expression of neoliberalism. His fascist aims go counter to the interests of capital in many instances. His obsession with tariffs is a case in point. Didn't stop the stock market from going up with his election, mind.