Most only work as second or fourth film villains, or even the setup pieces, after establishing what Superman can do.

Livewire was a hilarious disaster in the animated cartoon where an angry young woman gained superpowers and immediately started trying to kill people. Imp couldn't write a more deranged character if he tried. Any live action adaptation would suffer hard from having to avoid being too accurate to the cartoon version simply so it doesn't get torn to shreds for how awful the character is as a person, even before going full homicidal maniac after getting powers.

Toyman would only work if existing knowledge of Superman's powers was in place, otherwise Superman would just look through the entire city and find Toyman in under a minute.

Silver Banshee is a very, very boring superpowered character that would only serve as a minion or setup piece of something worse.

Master Jailer would trap Superman all of once then get overpowered because again he doesn't know anywhere near enough to stop someone as powerful as Superman without knowing what he can do. The most likely scenario would be trapping Superman as if it was anyone else, expecting that to work, finding out it doesn't, and then being taken out at superspeed before getting a chance to try again.

Hobby Robber: As you mention it would be a minor threat, and again requires Superman to already be established to even have a hobby collection in the first place to steal from.

Blue Matt: Invisibility doesn't stop Kryptonians.

Cyborg Superman generally only pops up after Doomsdays and any Death of Superman story, so still needs Superman established. Same with Metallo, having a character based someone, or designed to counter that someone, only works when said someone has existed for long enough for it to matter.

Ultra-Humanite isn't one I can see happening if anything Flash related ever comes about, he's too similar to Grodd.

5th dimensional Imp also only works when Superman is already established, and most likely as a 4th film comedy piece after any initial origin story film 1, gritty moral dilemma film 2, and then final waltz big fight film 3.

Edit: If Suicide Squad 2: Shitty Boogaloo hadn't used Starro I would have suggested that since it's not actually a problem you can punch most of the time since that would kill the hosts.

Most only work as second or fourth film villains, or even the setup pieces, after establishing what Superman can do.

Livewire was a hilarious disaster in the animated cartoon where an angry young woman gained superpowers and immediately started trying to kill people. Imp couldn't write a more deranged character if he tried. Any live action adaptation would suffer hard from having to avoid being too accurate to the cartoon version simply so it doesn't get torn to shreds for how awful the character is as a person, even before going full homicidal maniac after getting powers.

Toyman would only work if existing knowledge of Superman's powers was in place, otherwise Superman would just look through the entire city and find Toyman in under a minute.

Silver Banshee is a very, very boring superpowered character that would only serve as a minion or setup piece of something worse.

Master Jailer would trap Superman all of once then get overpowered because again he doesn't know anywhere near enough to stop someone as powerful as Superman without knowing what he can do. The most likely scenario would be trapping Superman as if it was anyone else, expecting that to work, finding out it doesn't, and then being taken out at superspeed before getting a chance to try again.

Hobby Robber: As you mention it would be a minor threat, and again requires Superman to already be established to even have a hobby collection in the first place to steal from.

Blue Matt: Invisibility doesn't stop Kryptonians.

Cyborg Superman generally only pops up after Doomsdays and any Death of Superman story, so still needs Superman established. Same with Metallo, having a character based someone, or designed to counter that someone, only works when said someone has existed for long enough for it to matter.

Ultra-Humanite isn't one I can see happening if anything Flash related ever comes about, he's too similar to Grodd.

5th dimensional Imp also only works when Superman is already established, and most likely as a 4th film comedy piece after any initial origin story film 1, gritty moral dilemma film 2, and then final waltz big fight film 3.

Edit: If Suicide Squad 2: Shitty Boogalo hadn't used Starro I would have suggested that since it's not actually a problem you can punch most of the time since that would kill the hosts.

Most only work as second or fourth film villains, or even the setup pieces, after establishing what Superman can do.

Livewire was a hilarious disaster in the animated cartoon where an angry young woman gained superpowers and immediately started trying to kill people. Imp couldn't write a more deranged character if he tried. Any live action adaptation would suffer hard from having to avoid being too accurate to the cartoon version simply so it doesn't get torn to shreds for how awful the character is as a person, even before going full homicidal maniac after getting powers.

Toyman would only work if existing knowledge of Superman's powers was in place, otherwise Superman would just look through the entire city and find Toyman in under a minute.

Silver Banshee is a very, very boring superpowered character that would only serve as a minion or setup piece of something worse.

Master Jailer would trap Superman all of once then get overpowered because again he doesn't know anywhere near enough to stop someone as powerful as Superman without knowing what he can do. The most likely scenario would be trapping Superman as if it was anyone else, expecting that to work, finding out it doesn't, and then being taken out at superspeed before getting a chance to try again.

Hobby Robber: As you mention it would be a minor threat, and again requires Superman to already be established to even have a hobby collection in the first place to steal from.

Blue Matt: Invisibility doesn't stop Kryptonians.

Cyborg Superman generally only pops up after Doomsdays and any Death of Superman story, so still needs Superman established. Same with Metallo, having a character based someone, or designed to counter that someone, only works when said someone has existed for long enough for it to matter.

Ultra-Humanite isn't one I can see happening if anything Flash related ever comes about, he's too similar to Grodd.

5th dimensional Imp also only works when Superman is already established, and most likely as a 4th film comedy piece after any initial origin story film 1, gritty moral dilemma film 2, and then final waltz big fight film 3.