If some runs are not being shown on leaderboard it's because the Option EDIT GAME >> EMULATOR RUNS >> HIDDEN BY DEFAULT is active. Please, change to SHOW BY DEFAULT on all TM games and categories!

I checked Twisted Metal and Twisted Metal 2. Both games have "Shown by default" enabled.

I noticed that Minion runs do not appear on runners personal info '-' Is it normal?

It might be because the Minion runs are under the Miscellaneous tab on the TM2 boards. That'd be my guess.

So remove it from the miscellaneous lol