diff --git a/runtime/doc/lua.txt b/runtime/doc/lua.txt
index 840d7a57bb..053b47a1c8 100644
--- a/runtime/doc/lua.txt
+++ b/runtime/doc/lua.txt
@@ -2074,7 +2074,7 @@ vim.islist({t})                                                 *vim.islist()*
     |rpcrequest()| or |vim.fn|.
 
     Parameters: ~
-      • {t}  (`table?`)
+      • {t}  (`any?`)
 
     Return: ~
         (`boolean`) `true` if list-like table, else `false`.
diff --git a/runtime/lua/vim/_meta/api_keysets.lua b/runtime/lua/vim/_meta/api_keysets.lua
index da537da5d6..0ddc5fa3b1 100644
--- a/runtime/lua/vim/_meta/api_keysets.lua
+++ b/runtime/lua/vim/_meta/api_keysets.lua
@@ -246,12 +246,12 @@ error('Cannot require a meta file')
 --- @field end_col? integer
 --- @field hl_group? any
 --- @field virt_text? any[]
---- @field virt_text_pos? string
+--- @field virt_text_pos? "eol"|"eol_right_align"|"overlay"|"right_align"|"inline"
 --- @field virt_text_win_col? integer
 --- @field virt_text_hide? boolean
 --- @field virt_text_repeat_linebreak? boolean
 --- @field hl_eol? boolean
---- @field hl_mode? string
+--- @field hl_mode? "replace"|"combine"|"blend"
 --- @field invalidate? boolean
 --- @field ephemeral? boolean
 --- @field priority? integer
@@ -260,7 +260,7 @@ error('Cannot require a meta file')
 --- @field virt_lines? any[]
 --- @field virt_lines_above? boolean
 --- @field virt_lines_leftcol? boolean
---- @field virt_lines_overflow? string
+--- @field virt_lines_overflow? "trunc"|"scroll"
 --- @field strict? boolean
 --- @field sign_text? string
 --- @field sign_hl_group? integer|string
diff --git a/runtime/lua/vim/_meta/builtin_types.lua b/runtime/lua/vim/_meta/builtin_types.lua
index 9c8f2ef603..a431684dcd 100644
--- a/runtime/lua/vim/_meta/builtin_types.lua
+++ b/runtime/lua/vim/_meta/builtin_types.lua
@@ -153,7 +153,7 @@
 --- list number in the quickfix stack; zero
 --- means the current quickfix list and "$" means
 --- the last quickfix list.
---- @field nr? integer
+--- @field nr? integer|'$'
 ---
 --- function to get the text to display in the
 --- quickfix window. The value can be the name of
diff --git a/runtime/lua/vim/shared.lua b/runtime/lua/vim/shared.lua
index 9ce24719aa..9476654e37 100644
--- a/runtime/lua/vim/shared.lua
+++ b/runtime/lua/vim/shared.lua
@@ -688,7 +688,7 @@ end
 ---
 ---@see |vim.isarray()|
 ---
----@param t? table
+---@param t? any
 ---@return boolean `true` if list-like table, else `false`.
 function vim.islist(t)
   if type(t) ~= 'table' then
diff --git a/src/nvim/api/keysets_defs.h b/src/nvim/api/keysets_defs.h
index e1e936779e..0378da6b47 100644
--- a/src/nvim/api/keysets_defs.h
+++ b/src/nvim/api/keysets_defs.h
@@ -32,12 +32,12 @@ typedef struct {
   Integer end_col;
   Object hl_group;
   Array virt_text;
-  String virt_text_pos;
+  Enum("eol", "eol_right_align", "overlay", "right_align", "inline") virt_text_pos;
   Integer virt_text_win_col;
   Boolean virt_text_hide;
   Boolean virt_text_repeat_linebreak;
   Boolean hl_eol;
-  String hl_mode;
+  Enum("replace", "combine", "blend") hl_mode;
   Boolean invalidate;
   Boolean ephemeral;
   Integer priority;
@@ -46,7 +46,7 @@ typedef struct {
   Array virt_lines;
   Boolean virt_lines_above;
   Boolean virt_lines_leftcol;
-  String virt_lines_overflow;
+  Enum("trunc", "scroll") virt_lines_overflow;
   Boolean strict;
   String sign_text;
   HLGroupID sign_hl_group;