If you're getting hit by raw teleports, it's a reaction time issue on your end. They all have long start-up times except Raiden's.
• Noob's teleport is a high. React by ducking and whiff punish.
• Kung Lao's is also a high and can be ducked and whiff punished, EXCEPT for the mid (DU4) which they're generally only going to use immediately after they hit you with the Throw tele trying to trigger the KB. If you get hit with the throw tele and they tele again, 90% of the time it's to KB with the DU4, so just block, but could be a trick to hit you with two throw teles in a row so also be prepared to duck it just in case.
• Scorpion is a little tricky because a) it's always a mid and b) it's fake-safe if he does it with any bar since can Amp it and you're basically forced to overhold your block when respecting his option to Amp, but if he does Amp it you're set up for a big punish on block. Just try to read when he's going to try it, usually if you're zoning him out and his spears keep not working he'll risk it to get in, otherwise don't see a lot of raw teleports.
• Liu Kang's is total bullshit, and I'm saying that as someone currently learning LK because of how much I hate his TP. It can OH or High or Low depending on his input, but at least he can't combo off of it.
• Raiden's is just for repositioning and has a fast startup time but longer recovery, doesn't hit on actual tele, so just react with your fastest punish. Recovery frames on it should give you plenty of time, but his can also be modified to do weird feint'y shit like TPing in place to fuck with you.
• Kollector's has a massive startup time -- 40 frames -- and you should be punishing him as soon as he appears since it also has a long recovery once he appears and he can't control the distance he appears at.
• Cetrion's has no auto-attack but can be targeted to certain spacing, and can feint like Raiden's. Also has a long recovery period and can be punished, the animation for it is something you'll just have to learn to react to.
• Kitana's isn't a "real" teleport, just some air shit, and everything she can do from it hits mid, so it's easy to block and I don't see anyone pick it.
They can avoid neutral to an extent, but raw TPs are a pretty bad idea for almost everyone except Scorpion forcing you to respect his Amp option because they can easily lead to a full combo punish.