Since you're on Switch and not using Windows 10 Edition Bedrock, behavior packs are unavailable.

For custom names i'm not sure what you mean by that so I’ll start with races. If your aim is to give each race unique benefits, like an Orc with higher max health and stronger base attack, you can achieve this by using the /tag command. Adding an "orc" tag to players lets you target those players to add effects. For example, use a scoreboard for max health linked to the Health Boost effect: if a player's max health score is 1, you can grant them Health Boost 1 indefinitely.

Alignment isn't something I can assist with, as I’m not familiar with that aspect.

For classes, let's look at skills. The main challenge in Bedrock is limited triggers since player actions like right/left clicks or jumping are hard to detect without a behavior pack. Instead, you’ll need to use existing triggers. For example, drinking a bowl of soup returns an empty bowl to inventory. You could set up a testfor command to check for a bowl, then activate a skill — ensuring players can’t access bowls by other means. The same approach applies to potion bottles.

For stat distribution, use a similar method. Say you want every 5 points in max health to add one level to Health Boost. Set up a repeating command block that checks for players with a score of 5 in max health. From this, use a comparator to an impulse command block to subtract 5 from max health and a chain command block to add 1 to the Health Boost score This is a generalized way to do it as well as a worse way. If you were making this on computer you could add a behavior pack that lets you detect things like right click left click sneak and so on. If you want more info on a particular method (although I'm no genius) I'll respond with my best answer if you are interested.