From what I have seen in the body /power building and strongman arena, you will not get away with high carb, even with the muscle. Examples of this Dr Shawn Baker, Hafthor Bjornsson and Stan Efferding; all of these had blood sugar issues despite the muscle and being either at the top or near there top in their respective sports (all resolved with dietary changes). I have noticed that it doesn't matter if an athlete is endurance based either - it is not possible to out run the carbs.
Once you have been metabolically broken it seems apparent to me a path has to be trodden. Keto only restricts from convenience point of view (which is usually code for fast / fake food) ...., beans and grains, all of the other food groups are there and even treats (YouTube Ketoserts). So my after midday breakfast was 4 bacon sandwiches, mackerel sandwich, marmite sandwich and nuts (my mouth was bursting with flavours):
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The bacon sandwiches are sweet in a meaty way, the fish monger made pate and marmite offer umami flavours and nuts for texture and other good things. Dinner will be mostly lamb shoulder with garlic and rosemary (I will have loads). All of this will fuel 100 barbell squats and X3 bar workouts.
I do butternut squash as well.