diff --git a/lib/ramble/ramble/keywords.py b/lib/ramble/ramble/keywords.py
index 2b86437ce..0eb7bcb5e 100644
--- a/lib/ramble/ramble/keywords.py
+++ b/lib/ramble/ramble/keywords.py
@@ -7,14 +7,24 @@
 # except according to those terms.
 
 import re
-from enum import Enum
+from enum import Enum, auto
 
 import ramble.error
 from ramble.repository import type_definitions
 from ramble.util.logger import logger
 
-key_type = Enum("key_type", ["reserved", "optional", "required"])
-output_level = Enum("output_level", ["key", "variable"])
+
+class key_type(Enum):
+    reserved = auto()
+    optional = auto()
+    required = auto()
+
+
+class output_level(Enum):
+    key = auto()
+    variable = auto()
+
+
 default_keys = {
     "workspace_name": {"type": key_type.reserved, "level": output_level.variable},
     "workspace": {"type": key_type.reserved, "level": output_level.variable},
@@ -105,58 +115,10 @@ class Keywords:
                   specific inputs to further configure the experiment.
     """
 
-    workspace_name: str
-    workspace: str
-    workspace_root: str
-    workspace_configs: str
-    workspace_software: str
-    workspace_logs: str
-    workspace_inputs: str
-    workspace_experiments: str
-    workspace_shared: str
-    workspace_archives: str
-    workspace_deployments: str
-    application_name: str
-    application_spec: str
-    application_run_dir: str
-    application_input_dir: str
-    application_namespace: str
-    application_version: str
-    simplified_application_namespace: str
-    workload_name: str
-    workload_run_dir: str
-    workload_input_dir: str
-    workload_namespace: str
-    simplified_workload_namespace: str
-    workload_group: str
-    license_input_dir: str
-    experiments_file: str
-    experiment_name: str
-    experiment_hash: str
-    experiment_run_dir: str
-    experiment_status: str
-    RAMBLE_STATUS: str
-    experiment_index: str
-    experiment_namespace: str
-    simplified_experiment_namespace: str
-    log_dir: str
-    log_file: str
-    err_file: str
-    env_path: str
-    input_name: str
-    repeat_index: str
-    spec_name: str
-    env_name: str
-    n_ranks: str
-    n_nodes: str
-    processes_per_node: str
-    n_threads: str
-    batch_submit: str
-    mpi_command: str
-    workload_template_name: str
-    experiment_template_name: str
-    unformatted_command: str
-    unformatted_command_without_logs: str
+    # Keyword attributes are set dynamically in update_keys(). This is only
+    # reached for unknown attributes, and tells type checkers keywords are str.
+    def __getattr__(self, name: str) -> str:
+        raise AttributeError(f"'{type(self).__name__}' object has no attribute '{name}'")
 
     def __init__(self, extra_keys=None):
         # Merge in additional Keys:
diff --git a/lib/ramble/ramble/results_table.py b/lib/ramble/ramble/results_table.py
index 1be0877a4..8c6320c2b 100644
--- a/lib/ramble/ramble/results_table.py
+++ b/lib/ramble/ramble/results_table.py
@@ -9,6 +9,7 @@
 import copy
 import os
 
+from ramble.namespace import namespace
 from ramble.util.file_util import create_symlink
 from ramble.util.logger import logger
 from ramble.util.module_utils import import_pandas
@@ -18,7 +19,7 @@
 class ResultsColumn:
     """Class representing a single column in a results table"""
 
-    _where_name = "where"
+    _where_name = namespace.where
     _column_attrs = [
         "name",
         "expression",
diff --git a/lib/ramble/ramble/variants.py b/lib/ramble/ramble/variants.py
index 76b95bf05..f80c20e67 100644
--- a/lib/ramble/ramble/variants.py
+++ b/lib/ramble/ramble/variants.py
@@ -8,38 +8,44 @@
 
 import functools
 from collections.abc import Sequence
-from enum import Enum
+from enum import Enum, auto
 from typing import Any, Callable, Dict, Optional, Union
 
 import ramble.error
 import ramble.util.colors as color
 from ramble.expander import Expander
+from ramble.keywords import keywords
+from ramble.namespace import namespace
 
 from spack.util.spack_yaml import syaml_bool
 
 reserved_variants = {
     "modifier",
-    "package_manager",
+    namespace.package_manager,
     "package_manager_prefix",
-    "system",
-    "platform",
-    "version",
-    "workflow_manager",
-    "workload_group",
-    "is_repeat_child",
-    "is_repeat_parent",
-    "repeat_index",
+    namespace.system,
+    namespace.platform,
+    namespace.version,
+    namespace.workflow_manager,
+    keywords.workload_group,
+    keywords.is_repeat_child,
+    keywords.is_repeat_parent,
+    keywords.repeat_index,
 }
 
 standard_variants: Dict[str, Dict[str, Any]] = {
-    "containerized": {
+    namespace.containerized: {
         "default": False,
         "values": (True, False),
         "description": "Whether this experiment is run inside a container",
     },
 }
 
-variant_types = Enum("variant_types", ["default", "experiment", "version"])
+
+class variant_types(Enum):
+    default = auto()
+    experiment = auto()
+    version = auto()
 
 
 def invalidates_cache(func):