Issues with SetPoint and a Few Other Questions

[JDoubleU00]

I'm working on a personal addon that will place addons listed in a table based on which addons are loaded and visible. SetPoint seems to be my kryptonite, as you can see, I have triedtwo ways to anchor the frames. No matter how hard I try to place them, they tend to overlap. What am I missing?

local name, mod = ...
local peorder = {
    {"JWXPBar","JWXPBarFrame",0,5},
    {"JWRepBar","JWRepBarFrame",0,5},
    {"BFAInvasionTimer","BFAInvasionTimer",0,25},
    {"Skada","SkadaBarWindowSkada",0,25},
}
local pestartpoint = {"BOTTOMRIGHT","UIParent", "BOTTOMRIGHT",-10,30}
local lt = {}
 
local function PlaceStuff()
    for key, value in pairs(peorder) do
      if IsAddOnLoaded(peorder[key][1]) and _G[peorder[key][2]]:IsVisible() then
         table.insert(lt,peorder[key])
      end
   end
   
   for j, k in pairs(lt) do
      _G[lt[j][2]]:SetMovable(true)
      _G[lt[j][2]]:SetUserPlaced(true)
      _G[lt[j][2]]:ClearAllPoints()
      if j == 1 then
         _G[lt[j][2]]:SetPoint(unpack(pestartpoint)) --first frame gets anchored to UIParent
      else
         --_G[lt[j][2]]:SetPoint("BOTTOM",_G[lt[j-1][2]],"TOP",lt[3],lt[4]) --look at the table entry for anchoring
         _G[lt[j][2]]:SetPoint("BOTTOMLEFT",_G[lt[j-1][2]],"TOPLEFT",lt[3],lt[4])
         _G[lt[j][2]]:SetPoint("BOTTOMRIGHT",_G[lt[j-1][2]],"TOPRIGHT",lt[3],lt[4])
      end
   end
end
 
local PEF = CreateFrame("Frame", name, UIParent)
PEF:RegisterEvent("PLAYER_ENTERING_WORLD")
PEF:SetScript("OnEvent", PlaceStuff)

Is it OK to use _G to lookup the frames? I tried just using the name, but I wasn't successful.

Finally, maybe I am overthinking the design. I'm not sure if using two loops is the most efficient way, or creating a second table to correctly list the active and visible addons.

Thanks as always.