This mod introduces a few commands to make teleportation easier:

/waypoint create <name> <coords> <dimension> - Takes optional coordinates & dimension. If they aren't passed, then the players current dimension & position will be used. Ideally, this should work with modded dimensions as well. Waypoint name is a required parameter and will be the waypoint name.
/waypoint list <username> - This lists all waypoints created on the server. It takes an optional parameter, username: When passed, all the waypoints created by that player will be shown.
/waypoint info <name> - This will output the coordinates and dimension of the waypoint, and how far away the player is if in the same dimension as the waypoint. Waypoint name is a required parameter.
/waypoint follow <name> - This gives indications to the player to reach the selected waypoint. It tells wether the facing direction is correct and the distance. Waypoint name is a required parameter. IMPORTANT: Load this SERVER-SIDE datapack for the /waypoint follow command to work!
/waypoint delete <name> - This can only be run be an operator or the owner of the waypoint. Waypoint name is a required parameter.
/waypoint bookmark <view|add|remove> - These are essentially favourite waypoints per user for quick access.

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Waypoint commands