They are ALL cults.
Unga bunga bunga!
Ooga booga wooga!
Oogly boogly boogly!
Maga waga mugwump!

I’ll simplify it…..MAGAT, Proud Boys, oath keepers, 3 precenters, Patriot prayer, even BLM and ANTIFA, and all religions. It’s all about ‘Belonging’ and being a ‘Part of something’.

I think the primary difference is the level of fanaticism and the level to which they separate themselves from the rest of society. Every religion has some cultish aspects.

Do its practices and theology conform to the B.I.T.E. model? If yes then it is a cult
Is the founder leader still alive or is there a living "prophet"? If yes then it is a cult (founders of religions tend to be dead and current leader is god's rep on earth)
Does it have under five million members? If yes then it is a cult or perhaps a sect

Behaviour control
Information control
Thought control
Emotional control

Cult - a misplaced or excessive admiration for a particular person or thing.

Religion ... pure and faultless is this: to help widows and orphans in need and avoiding worldly corruption. James 1:27

I guess you could say that if someone has excessive admiration for helping widows and orphans in need while avoiding worldly corruption, it could be something of a cult.

While I'd say there is little difference in many ways, my take is that a cult is the following (and worshiping) of one human who has defined creation and/or the way humans should live, where that person is the interpreter or spokesperson of the doctrine, or just making it up as they go along, where a religion is more of a traditional connection to one's (natural or supernatural) creator and the various interpretations of which may surely have started as a cult, but has grown to social acceptance through years of passing down through generations.

No difference in meaning but plenty in size, real estate, followers, government control, power and corruption.

A cult is a small unpopular religion, and a religion is a large popular cult. Both are on the same spectrum; it is only a question of size.

A religion, is any cult which has gained enough popularity, age, money, power or respectability, to demand consideration from government, and therefore influence political choices.

While a cult is any religion weak enough for politicians to kick when they need a scape goat.

religion:
[ahdictionary.com]

cult:
[ahdictionary.com]

"The only difference between a cult and a religion is the amount of real estate they own.”

~ Frank Zappa

Nope. No difference at all.
ALL religions are cults. Some have just become more mainstream than others.

All religions are cults, only separated by belief in there own god or gods.